Probate Code §6451 provides that
(a) An adoption severs the relationship of parent and child between an adopted person and a natural parent of the adopted person 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 cohabiting with the other natural parent at the time the person was conceived and died before the person’s birth.
(2) The adoption was by the spouse of either of the natural parents or after the death of either of the natural parents.
In the case of inheritance, adoption can play the deciding factor if an individual inherits from an estate or not. A recent unpublished appellate decision was centered on the adoption of a decedent in 1923 and the inheritance rights of a niece.
"Decedent was born in Florida in September 1923. His mother died when he was about eight days old. Around November 1923, Decedent was adopted by J.B. Morrow and Edna Morrow. Decedent died intestate in California in 2017. He was survived by his spouse who subsequently passed away in 2020. In 2021, Respondent Debbra Tauber was appointed administrator of Decedent's estate."
"In 2023, Pitts filed a petition to determine her entitlement to a share of Decedent's estate (§ 11700). She argued she was entitled to inherit from Decedent because she was his biological niece, the daughter of his biological sister. Tauber filed an objection to the petition. According to Tauber, Pitts was not an intestate heir entitled to distribution because Decedent had been adopted. Tauber noted adoption severs a parent-child relationship pursuant to section 6451, subdivision (a)."
"As noted ante, to inherit through a natural parent, Pitts must satisfy section 6451, subdivision (a), which includes the requirement that Decedent and his natural parent "lived together at any time as parent and child." (§ 6451, subd. (a)(1).) The trial court did not err by finding insufficient evidence to establish Decedent and his natural parent lived together at any time as parent and child. Pitts relies on circumstantial evidence—i.e., records showing a shared residence and inference that Decedent was born at home—to show Decedent and his mother must have lived together. But the inference is speculative. Decedent's mother died eight days after his birth, and he was adopted when he was about two months old. At most, Pitts' documents establish the mother resided at the listed address. They do not establish Decedent and the mother lived together as parent and child within the meaning of section 6451, subdivision (a)(1). Nor does the brief period (eight days) compel such a finding as a matter of law. On this record, the court could reasonably conclude Pitts did not meet her burden."
Estate of Morrow, Orange County Superior Court case no. 30-2020-01172277



