[129]*129Opinion
BAXTER, J.
We are asked to decide whether, in looking to the law of intestacy as a guide to a testator’s presumed intent when a will provision is ambiguous, a court should consider the law in effect at the time the will or testamentary trust was executed to determine if a child adopted out of a designated ancestor’s family is among the “issue” and “children” the testator intended to benefit, or should apply the law in effect at the death of the ancestor through whom the child may take. Appellant, minor A., a creditor of Jon E. Newman, claims that even though Newman was adopted by Newman’s stepfather in 1946, he remains a “child” of Earl Mitchell, his natural father, within the meaning of the will of Helen Lathrop, Mitchell’s sister, and is entitled to share in a testamentary trust created for the benefit of Mitchell who is now deceased, Mitchell’s siblings, and their children.
Lathrop executed her will and died in 1972. Appellant relies on a 1985 change in the law of intestate succession which permits “adopted-out” children to take if adopted by a stepparent. Other beneficiaries of the trust contend that the law in effect when Lathrop executed the will and when she died applies, as that law presumably will carry out her intent.
The Court of Appeal applied the law governing intestate succession rights of adopted-out children which was in effect at the time Newman’s natural father died in 1993 and held that Newman was a beneficiary notwithstanding the adoption. We conclude that, since Lathrop did not express a contrary intention in the will, the court must look to former Probate Code section 257, the statute applicable both at the time Helen Lathrop executed her will and at the time of her death, to ascertain her presumptive intent. We, therefore, reverse the judgment of the Court of Appeal.
I
Background
Helen Lathrop, a resident of Belvedere, California, died in December 1972. Her will, dated November 3, 1972, left the residue of her estate to a testamentary trust under which the income was to be paid to her six brothers and sisters, or on the death of any of them to that person’s living “issue” by right of representation. On the death of the last of the siblings, the trust estate was to be distributed per capita to the then living children of the siblings. The will was admitted to probate in the Marin County Superior Court early in 1973, and the residue of the Lathrop estate was ordered distributed to Wells Fargo Bank, as trustee of the testamentary trust, in May [130]*1301974. The trust, whose provisions parallel those of Lathrop’s will, is administered by the trustee under the supervision of the San Francisco Superior Court.
Jon E. Newman’s natural father, Earl Mitchell, a brother of Helen Lathrop and an income beneficiary of the trust, died in 1993. Jon E. Newman had been adopted by his stepfather in 1946. In August 1993, the guardian ad litem of minor A. petitioned the superior court for an order attaching 25 percent of Jon E. Newman’s share of the income of the Lathrop trust. The petition alleged that Newman was the defendant in an action pending in the State of Washington, that the guardian and Newman had entered into a settlement agreement that had been approved by the court, and that “John [sic] E. Newman has agreed to stipulate to an order of the California court to attach 25% of his share of the income of the Lathrop Trust.”1 The petition was granted on November 1, 1993, but thereafter Wells Fargo Bank, as trustee, filed a petition for advice and instructions pursuant to Probate Code section 17200.2 The Wells Fargo petition alleges that Newman had been adopted by his stepfather, W. E. Newman, in 1946, and asks if Newman was “issue of’ Earl Mitchell at the time of Mitchell’s death. The petition also sought advice regarding the distribution to Newman of that part of the trust income that had been going to Mitchell. The apparent trust beneficiaries, including Newman, as well as the guardian of minor A., were given notice. Several other income beneficiaries subsequently filed declarations that they had not received notice of the earlier proceeding, and they appeared in the trustee’s proceeding.
On June 28, 1994, the superior court made the order from which this appeal was taken, ruling that under former Probate Code section 257, the law in effect in 1972 when Helen Lathrop executed her will, and Estate of Russell (1971) 17 Cal.App.3d 758 [95 Cal.Rptr. 88] (Russell), Newman was not the child of Earl Mitchell for any purpose, and that there being no contrary expression of intent in the Lathrop trust, Lathrop was found to have intended the terms of the trust to be interpreted in a manner consistent with California law as it stood when the will was executed.3 The court ruled that subsequent changes (§ 6451 [added by Stats. 1993, ch. 529, § 5]; former § 6408 [added by Stats. 1990, ch. 79, § 14, p. 721 and repealed by Stats. 1993, ch. 529, [131]*131§ 4]) did not affect that interpretation since they were expressly inapplicable under the terms of section 6103.4 The court then found that Newman is not a beneficiary of the trust and directed that the trustee make no distributions from the trust to or for the benefit of Newman or any creditor of Newman. In so doing, the court noted that it had not previously adjudicated the issue of whether Newman was a beneficiary of the trust, and that no notice of the earlier petition had been given to the trust beneficiaries. Newman and minor A. filed a notice of appeal. Minor A. is the only party claiming a share of the trust through Earl Mitchell who appeared in the Court of Appeal.5
Appellant conceded that under former Probate Code section 257, from 1955 to 1985, an adopted person did not succeed to the estate of the person’s natural parents under the law governing intestacy. He argued that since 1985, the law, which in 1993 was set out in former section 6408, subdivision (b), provided that Newman should succeed to Mitchell’s interest in the Lathrop trust, as that law presumably reflected Lathrop’s intent when she left income interests to “issue” and the remainder to “children” of her siblings. The Court of Appeal agreed. Turning to rules of construction it believed [132]*132applicable, that court observed that Lathrop was presumptively aware that the laws governing inheritance rights of adopted children might change after her death; that this presumption was strengthened by the fact that the laws governing inheritance had been amended drastically during her lifetime; that she had used a designated ancestor, life estate, and the words “then living” as prerequisites for the gifts; and that her will expressed an intent to benefit the children of each of her siblings. These observations led the Court of Appeal to conclude that whether Newman was “issue” of Mitchell within the meaning of the trust had to be decided under the law in effect when Newman’s father died in 1993, and not the law in effect in 1972 when Lathrop died. The court therefore reversed the order of the superior court and remanded for further findings on whether Newman was the issue of Mitchell under that statute.
Respondents, four income beneficiaries of the trust to whom a portion of the corpus will be distributed upon the death of the last sibling, contend that the rules of construction on which the Court of Appeal relied govern the timing and vesting of class gifts, but are not applicable to defining testamentary terms such as “issue.” The result, they argue, is inconsistent with controlling precedent, which holds that the adoption statutes and policies prevailing at the time a will is executed determine who is included in a class gift to “issue” or “children.” They also note that the Legislature expressly provided that the statute under which the Court of Appeal decided that Newman should be treated as issue of Mitchell did not apply to the estates of decedents who died before January 1, 1985.
n
Discussion
Former Probate Code section 257 provided from 1955 through 1985 (Stats. 1955, ch. 1478, § 1, p. 2690): “An adopted child shall be deemed a descendant of one who has adopted him, the same as a natural child, for all purposes of succession by, from or through the adopting parent the same as a natural parent. An adopted child does not succeed to the estate of a natural parent when the relationship between them has been severed by adoption, nor does such natural parent succeed to the estate of such adopted child, nor does such adopted child succeed to the estate of a relative of the natural parent, nor does any relative of the natural parent succeed to the estate of an adopted child.”
Effective January 1, 1985, provisions of the former Probate Code, including former section 257 were repealed (Stats. 1983, ch. 842, § 19, p. 3024) [133]*133and replaced by new provisions, containing former section 6408 (Stats. 1983, ch. 842, § 55, p. 3083). The new section permitted the establishment of a parent-child relationship between an adopted person and the person’s natural parent under specified circumstances. Former section 6408, subdivision (a) was amended in 1985, and the provisions governing the parent-child relationship between an adopted person and his or her natural parent were placed in a new section, former section 6408.5, subdivision (a). (Stats. 1985, ch. 982, §21, pp. 3118-3119.) The code, including former section 6408.5, was repealed in 1990 (Stats. 1990, ch. 79, § 13, p. 463) and a new code, containing a new, substantially similar provision as section 6408, was enacted (Stats. 1990, ch. 79, § 14, p. 721).6
At the time Newman’s natural father died in 1993, subdivision (b) of former section 6408 (former section 6408(b)) provided:
“The relationship of parent and child does not exist between an adopted person and the person’s natural parent unless both of the following requirements are satisfied:
“(1) The natural parent and the adopted person lived together at any time as parent and child, or the natural parent was married to, or was cohabiting with, the other natural parent at the time the child was conceived and died before the birth of the child.
“(2) The adoption was by the spouse of either of the natural parents or after the death of either of the natural parents.”7
Section 6414, subdivision (a), expressly limited application of former section 6408(b) to estates of decedents who died on January 1, 1985, or thereafter. It states: “[T]his part does not apply where the decedent died before January 1, 1985, and the law applicable prior to January 1, 1985, continues to apply where the decedent died before January 1, 1985.”8
The Court of Appeal did not discuss the impact of section 6414 on its application of former section 6408(b) to the Lathrop trust.
[134]*134The parties agree that the Probate Code provisions governing construction of wills also apply to construction of a decree of distribution of a testamentary trust when the decree parallels that of the will. (See Estate of Joslyn (1995) 38 Cal.App.4th 1428 [45 Cal.Rptr.2d 616]; Estate of Newmark (1977) 67 Cal.App.3d 350 [136 Cal.Rptr. 628].)
“The intention of the transferor as expressed in the instrument controls the legal effect of the dispositions made in the instrument.” (§ 21102, subd. (a).) “ ‘The paramount rule in the construction of wills, to which all other rules must yield, is that a will is to be construed according to the intention of the testator as expressed therein, and this intention must be given effect as far as possible.’ (Estate of Wilson (1920) 184 Cal. 63, 66-67 [193 P. 581].) The rule is imbedded in the Probate Code. (§ 101.) Its objective is to ascertain what the testator meant by the language he used.” (Estate of Russell (1968) 69 Cal.2d 200, 205-206 [70 Cal.Rptr. 561, 444 P.2d 353], fns. omitted.)
Where extrinsic evidence is not admissible or available, a reviewing court will independently construe the terms used in a will. (Estate of Dodge (1971) 6 Cal.3d 311, 318 [98 Cal.Rptr. 801, 491 P.2d 385]; Estate of Elkeles (1979) 90 Cal.App.3d 374, 377 [153 Cal.Rptr. 377].) Only if the terms are ambiguous will the court resort to presumptions which create a legal presumption of intent (Estate of Newmark, supra, 67 Cal.App.3d 350, 356), but otherwise unambiguous terms such as “child,” “children,” or “issue” may be ambiguous in the context of a particular will and the circumstances in which the will was executed. Thus, while these terms are not ambiguous in most cases and the ordinary use of words must be considered (§ 21122; former Prob. Code, § 106), as the enactment of former section 6408 and former Probate Code section 257 suggest, when a child has been adopted into or out of the testator’s family, and the will is not specific with regard to the rights of the adopted child, a latent ambiguity exists. (Estate of Craig (1944) 64 Cal.App.2d 132 [148 P.2d 100].) Before resorting to legal presumptions, however, as with any written instrument, the court must attempt to ascertain the intent of the testator by examining the will as a whole and the circumstances at the time of its execution. (§21121; former Prob. Code, § 103; Estate of Joslyn, supra, 38 Cal.App.4th 1428, 1433; see, e.g., Parsons v. Bristol Development Co. (1965) 62 Cal.2d 861 [44 Cal.Rptr. 767, 402 P.2d 839].) In so doing, when there is no conflict in extrinsic evidence, the court is not bound by inferences drawn from that evidence by the trial court. (62 Cal.2d at p. 866, fn. 2; City of Manhattan Beach v. Superior Court (1996) 13 Cal.4th 232, 238 [52 Cal.Rptr.2d 82, 914 P.2d 160].)
A. The will of Helen M. Lathrop and the circumstances of its execution.
Nothing on the face of the Lathrop will assists in understanding her intent with regard to adopted-out children when she directed that trust [135]*135income be paid to the issue of a deceased sibling and that on the death of the last sibling the trust corpus be distributed to the then living children of her siblings.
Lathrop also used the word “issue” in one will provision outside the trust in which real property is left to a husband and wife, or the survivor, or, if both predeceased Lathrop “to their issue, by right of representation.” All other specific bequests were conditioned on the devisee surviving Lathrop and none used the terms child, children, or issue. Lathrop also declared that she had no “children or issue of deceased children.” However, it seems clear that she used the term “issue” in its commonly understood meaning, i.e., direct descendants of the named beneficiaries or children, grandchildren, etc.
The limitation on ultimate distribution of the trust corpus to the then living “children” of her siblings “per capita,” as opposed to her siblings’ “issue,” reflects an apparent intent that the grandchildren of Lathrop’s siblings not take a share of the corpus. The instruction that the children of the siblings take “per capita and not per stirpes” reflects an intent that all of Lathrop’s living nieces and nephews take an equal share regardless of what their share of the trust income may have been.9 None of this is helpful, however, in ascertaining whether Lathrop intended that “issue” and “children” include a nephew who had been adopted by a stepfather before the will was executed and thus at that time was not legally recognized as a “child" of Lathrop’s brother Earl Mitchell.
Earl Mitchell was a named beneficiary of the trust created by the will. The adoption of his son Jon E. Newman by Jon’s stepfather had occurred in 1946, more than 25 years before the will was executed and Lathrop’s death. No extrinsic evidence was offered below to establish whether Lathrop was [136]*136aware of the adoption or whether she intended that children adopted out of the family of a sibling be on an equal footing with the adopted-out child’s cousins when either income or remainder distributions from the trust were made. Thus, we find nothing on the face of the will or in the circumstances of its execution to guide us in ascertaining the intent of the testator with respect to the status of Jon E. Newman other than the fact that he had been adopted out at the time the Lathrop will was executed. Also relevant, however, is the fact that Lathrop’s will appears to have been prepared by an attorney or other person familiar with the Probate Code. The will is in proper form, includes all standard provisions, uses many technical terms, and one copy in the record bears an “Office Copy” stamp dated on the date the will was executed.
B. Presumptions in aid of construction.
A testator is presumed to be aware of the public policy reflected in the statutory definitions of the terms used in a will at the time the will is executed and to intend that those definitions be followed in construction of the will unless a contrary intent is expressed in the will. This presumption is strongest when an attorney has drafted the will because “[w]here an instrument has been drawn by one skilled in the law, the presence of legal and technical terms is an indication that the legal term of art has been used, and therefore is to be accepted, in accordance with its legal definition. (Estate of Thompson [(1931) 18 Cal.App.2d 680 (64 P.2d 984)]; Maud v. Catherwood (1945) 67 Cal.App.2d 636, 641 [155 P.2d 111].)” (Wells Fargo Bank v. Huse (1976) 57 Cal.App.3d 927, 932 [129 Cal.Rptr. 522].)
Three California decisions applying these rules to the inheritance rights of adopted persons stated the law and public policy of which Lathrop was presumably aware at the time she executed her will; two of them were decided only the year before her will was made. The earliest, Estate of Heard (1957) 49 Cal.2d 514 [319 P.2d 637] (Heard), considered the rights of a child adopted into the testator’s family. In Heard, this court looked to former Probate Code section 257 for guidance as to the presumed intent of the testator who left testamentary trust gifts to “issue” of other beneficiaries, and held that a child adopted by the son of the testator after the will was made and the testator had died was the lawful “issue” of the testator’s son and entitled to a share of the trust left to such issue. The court explained the relevance of section 257: “We cannot suppose that wills are made in a vacuum; that the status of an adopted child being the same as a biological offspring, which is the public policy of this state, may be completely ignored, or that it was ignored by a testator when making a will any more than he may be said to ignore any other rules of law and public policy. When [137]*137he has not said anything about ‘adopted’ children using that word or the equivalent, the court, in seeking his intent, is in fact endeavoring to ascertain what his wishes would be if adopted children were called particularly to his mind. Lacking that, the court must assume that his will would fit it and be compatible with the general body of the law and public policy. Otherwise the court is left with little if any basis for interpreting the instrument.” (49 Cal.2d at p. 522.)
In the next case, Russell, supra, 17 Cal.App.3d 758, the Court of Appeal correctly extended the reasoning of Heard to determine the rights of a child adopted out of a trust beneficiary’s family. There, the will created a testamentary trust under the terms of which “children or issue surviving” of beneficiaries received the income share of their ancestor’s life estate on his or her death, and were the remaindermen. The will provided that the terms “child,” “issue” and “descendants” included children adopted before, but not after, the death of the testator. The question was whether a child bom to a recipient of a life estate after the death of the testator, but adopted out before the tmst terminated, had any interest in the trust.
The trial court found that the testator was familiar with the status of adopted persons and did not provide for the possibility that a class remainderman would be adopted out of the family. He intended, however, that his will be compatible with the law and public policy in effect at the time the will was executed. On that basis the trial court concluded that any rights the adopted-out child had were dependent on his being the child or issue of the life beneficiary at the time of her death. He was not. Therefore, neither he nor his issue had any interest in the income or corpus of the trust. Relying on Heard, the Court of Appeal affirmed: “The public policy alluded to in Heard is that which recognizes that adopted children are lineal descendants of their foster [sic] parent and are in the line of descent from him by virtue of statutory command, the same as if that line had been established by blood ties. (49 Cal.2d at p. 518.) In this state such policy has been expressed by the Legislature as embodied in the adoption statutes [citations] and in the succession statute providing for the inheritance rights of adopted children (§257). (See Estate of Heard, supra, 49 Cal.2d 514 at pp. 519-522.)” (Russell, supra, 17 Cal.App.3d at pp. 767-768.)
Recognizing that the case presented the converse of Heard, the Court of Appeal rejected a claim that former Probate Code section 257 had no application to rights under a testamentary distribution, and held that the effect of section 257 was that there had been a complete severance of the former relationship of the adopted person with his biological relatives. In the eyes of the law, he was no longer their “kindred.” (Russell, supra, 17 [138]*138Cal.App.3d at pp. 769-770; see Estate of Goulart (1963) 222 Cal.App.2d 808, 820 [35 Cal.Rptr. 465].)
Estate of Haneberg (1971) 19 Cal.App.3d 643 [96 Cal.Rptr. 807] (Haneberg), the third decision which presumably informed Lathrop’s intent, was decided shortly after Russell, and also involved children adopted out of a beneficiary’s family. Haneberg differed, however, as the testator had executed the will and died in 1926 and 1927, respectively, at a time when former Probate Code section 257 provided that while a child adopted out of the family did not inherit from his or her natural parent he or she did take through tiie natural parent from an ancestor or collateral relative. Applying the presumption that the testator, who “was bound to know the existing statutes affecting testamentary dispositions at the time he executed the will,” intended that the natural son of the testator’s grandson share in a class gift to the “issue” of the testator’s children, even though that child had been adopted by a stepfather. (19 Cal.App.3d at p. 648.)
More recently in Wells Fargo Bank v. Huse, supra, 57 Cal.App.3d 927, the court applied the presumption that a testator is aware of the law applicable at the time a will is executed and intends that law to govern construction of the will to a trust which failed to specify whether the term “lawful” issue was restricted to natural bom issue or included adopted children. As here, there was no extrinsic evidence bearing on the trustor’s intent. The court noted that among the circumstances surrounding the execution of a document which may be considered in interpreting it were “relevant statutes, case law and public policy in effect at the time of the execution of the document which, in the absence of a contrary intent, are deemed to become a part of the testamentary scheme (Estate of Heard (1957) 49 Cal.2d 514, 521-522 [319 P.2d 637]; Estate of Stanford (1957) 49 Cal.2d 120, 138 [315 P.2d 681].)” (57 Cal.App.3d at p. 933.)
Contrary to the assumption of appellant, the court is not free to depart from these precedents and presume that the 1985 statutory change under which a child adopted out of a decedent’s family by a stepparent may still inherit reflects Lathrop’s intent. The Legislature has acknowledged that the law and policy in effect when a person dies is presumed to reflect a decedent’s intent with regard to the status of adopted children, including children adopted out of a decedent’s family. It did so in section 6414, subdivision (a), which as noted above precludes application of the 1985 change in the law of intestate succession governing the status of adopted-out children to decedents who died before the 1985 change became effective. By creating this limitation on the application of the new policy permitting certain adopted-out children to take by intestate succession, the Legislature [139]*139gave persons who did not want their estates distributed in accordance with the new policy the opportunity to change their wills or, if they had not made a will, to make one with provisions addressing the status of an adopted-out child. Since the Legislature is aware that the law of intestate succession is often a referent when the court must construe the terms of a will, the court must respect this legislative limitation on retroactive application of the policy governing the status of children adopted by a stepparent.
Section 6414, subdivision (a) and this court’s reasoning in Heard therefore compel a conclusion that the law to which the court must look to find the presumed intent of a testator with regard to adopted children is the law in effect when a will is executed.10 Were we to look to later enacted laws, the result would be inconsistent with the legislative policy reflected in section 6414, subdivision (a) and we would have to assume that a testator who is presumptively aware of the current meaning of the words the testator is using to identify the recipients of his or her bounty in a class gift to children or issue, intends to permit a future Legislature to change the pattern of distribution through a post mortem amendment of the law of intestate succession.
Appellant argues alternatively that because Lathrop made a gift of a future interest to a class, and members of a class are not identified until the death of the designated ancestor, the statute we should apply to identify the persons who take under Lathrop’s will is that statute in effect when Earl Mitchell died. The Court of Appeal did so in Estate of Joslyn, supra, 38 Cal.App.4th 1428, an adult adoption case, holding that in some cases changes in public policy occurring after the death of the testator may be considered. There, at the time the will was executed, adult adoption was not permitted in California. That policy was changed before distribution of the trust estate to a designated class of beneficiaries was to be effected. The court therefore considered authorities which hold the identity of members of a class to which a gift is made is ascertained as of the date on which the designated ancestor dies. (Estate of McCallen (1975) 53 Cal.App.3d 142,151 [125 Cal.Rptr. 645]; Estate of Miner (1963) 214 Cal.App.2d 533, 540 [29 Cal.Rptr. 601]; Estate of Doyle (1962) 202 Cal.App.2d 434, 441-442 [21 Cal.Rptr. 123].) The court reasoned that under that rule an adult adoptee would be a “living descendant” of the testator’s son at the time the testator’s son died even though the adoptee would not have been considered such at [140]*140the time the will was executed. Finding that a strong parent-child relationship had been established between a stepchild raised in the family of the designated ancestor, the Joslyn court applied the rule that the members of the class are ascertained as of the date of death of the designated ancestor in determining whether the claimant was a descendant. (Estate of Joslyn, supra, 38 Cal.App.4th 1428, 1440.)
In the case before this court, Jon E. Newman had been adopted out of the family of Earl Mitchell when Mitchell died in 1993. At that time the class of persons entitled to share Mitchell’s income interest in the trust closed. Membership in the class was limited to “issue” of Mitchell in existence at the time of Mitchell’s death under the rule applied in Joslyn, but class closure rules do not tell us whether Lathrop should be presumed to have intended that Newman be considered “issue” even though Newman was no longer recognized by law as a son of Mitchell.
For the reasons stated above, we do not agree with Joslyn that a legislative change in public policy that is enacted subsequent to the death of a testator may fairly be deemed to reflect the intent of the testator. We presume that provisions in a will are made with an understanding of, and an intent to act pursuant to, the law and public policy as it exists when the will is executed. It is more reasonable to assume that a testator who intends a different disposition will make express provision governing the status of adopted children than to assume that the testator intends that their status not be established until some future time and be contingent upon legislative fiat.
The Court of Appeal also relied on subdivision (b) of section 21113, which provides that persons answering the description of a class at the date a future interest is to take effect are included in the class. That section refers to the time the class members are identified, however. It does not state that the law then in effect defines the terms used to describe the class.11 Estate of Woodworth (1993) 18 Cal.App.4th 936 [22 Cal.Rptr.2d 676], and Estate of Liddle (1958) 162 Cal.App.2d 7 [328 P.2d 35], on which Woodworth relied, construed the term “heirs” as meaning those persons entitled to take by intestate succession whose identities must be determined as of the death of [141]*141the designated ancestor. The court’s construction of the term “heirs” was independent of its holding that those persons who met that definition were to be determined as of the date of death of the designated ancestor. (18 Cal.App.4th at p. 943.) Wells Fargo Bank v. Title Ins. & Trust Co. (1971) 22 Cal.App.3d 295 [99 Cal.Rptr. 464] is to the same effect. There the trial court held that the heirs of the grantor of a life estate with a remainder to the grantor’s heirs if other remaindermen died without issue should be determined as of the death of the grantor. The Court of Appeal recognized this as the general rule, but found an exception applicable on the facts of that case. Again, the issue was the date on which class members were to be ascertained, not the meaning of “heirs.” (22 Cal.App.3d at pp. 299-300.) Estate of Ash (1966) 64 Cal.2d 497, 503 [50 Cal.Rptr. 549, 413 P.2d 149] addressed the date of vesting and involved no change in the law on construction of terms. Estate of Miner, supra, 214 Cal.App.2d 533, also involved a class gift to heirs and the rule that this designation reflects an intent that the statute of succession is applied as of the date of death of the designated ancestor to determine the class members. There was no change in the statutory definition of heirs between the date the will was executed and the date of death of the designated ancestor. In Estate of McCallen, supra, 53 Cal.App.3d 142, 152, the court said only that, absent a contrary intent reflected in the will, it was presumed that the testator intended that the will be construed in conformity with the law and policy under which an adopted child had the same status as a natural child. The children had been adopted after the will was executed but the law had not changed. There was no holding that the meaning of “children” or “issue” as used in the will should be determined under a law enacted after the will was executed.
As respondents note, cases concerned with the timing of class closure are not helpful in construing terms that identify the intended class members. Only one of these cases on which the Court of Appeal relied is arguably relevant. That case, Estate of Wilson (1924) 65 Cal.App. 680 [225 P. 283], does not support the Court of Appeal. There, the testator left a life estate in property, most of which had been inherited from her husband, to her son with a remainder to his children, or if he died without issue to the testator’s “ ‘heirs, as provided by the laws of the state of California, the same as if [the testator] had died intestate.’ ” (Id. at p. 682.) Under the law at the time the will was executed, the law of intestacy gave all of a decedent’s property, regardless of its source, to the decedent’s heirs. Several years later the law was changed to provide that property that had been the separate property of a predeceased spouse went to the relatives of the predeceased spouse. Two years after that the son died without issue.
The Wilson court concluded that the testator had deliberately adopted the law in existence and presumably known to her at the time the will was [142]*142executed. Absent a contrary intent expressed in the will, the court would not presume that she intended to adopt an unknown, nonexistent statute as the means by which to designate the objects of her gift. (Estate of Wilson, supra, 65 Cal.App. 680, 687.) We reach a similar conclusion here.
Relying on out-of-state authority, appellant also argues that a testator should be presumed to know that the law may change after the will is executed and therefore intends to have terms used to identify members of a class construed in light of the law in effect at the time the class closes. (See Solomon v. Central Trust Co. of N.E. Ohio (1992) 63 Ohio St.3d 35 [584 N.E.2d 1185, 36 A.L.R.5th 873]; In re Davidson’s Will (1947) 223 Minn. 268 [26 N.W.2d 223, 170 A.L.R. 215]; Carnegie v. First National Bank of Brunswick (1963) 218 Ga. 585 [129 S.E.2d 780]; Merson v. Wood (1961) 202 Va. 485 [117 S.E.2d 661].) That is not, and has not been, the rule in this state with regard to adopted children. The rule is that stated in Heard, Russell and Haneberg. The court will assume that the testator intended the will to be compatible with the law and public policy in effect at the time the will is executed and that, if the testator has a contrary intent, that intent will be made clear in the will. (Heard, supra, 49 Cal.2d 514, 522.)
We presume as we must that Lathrop knew the meaning of “issue” and “children” as those terms were understood at the time she executed the will. We also presume that she knew that under former Probate Code section 257, a child adopted out of a sibling’s family was not “issue” who would inherit through his or her natural father or mother at that time. Lathrop is presumed to have known that adopted-out children such as Newman would no longer be treated as a child of the natural parent in the eyes of the law and would not be included among the children or issue of her siblings to whom she left interests in the testamentary trust.
III
Disposition
The judgment of the Court of Appeal is reversed.
George, C. J., Mosk, J., Werdegar, J., Chin, J., and Brown, J., concurred.