Cal. Code Civ. Proc. § 1355
Within five years after date of entry of judgment in any proceeding had under the provisions of Chapter 5, or within five years after completion of notice by publication in an escheat action taken under the provisions of Section 1415, a person not a party or privy to such proceeding or action, if not otherwise barred, may file a petition in the Superior Court of the County of Sacramento, or as provided in Section 401, showing his claim or right to the money or other property, or the proceeds thereof.
Said petition shall be verified; and, in a proceeding for the recovery by the petitioner as heir, devisee, or legatee, or the successor in interest of an heir, devisee or legatee, of money or other property received by the State from the estate of a decedent under the provisions of Article 1 of Chapter 6, such petition, among other things must state:
The full name, and the place and date of birth of the decedent whose estate, or any part thereof, is claimed.
The full name of such decedent's father and the maiden name of his mother, the places and dates of their respective births, the place and date of their marriage, the full names of all children the issue of such marriage, with the date of birth of each, and the place and date of death of all children of such marriage who have died unmarried and without issue.
Whether or not such decedent was ever married, and if so, where, when and to whom.
How, when and where such marriage, if any, was dissolved.
Whether or not said decedent was ever remarried, and, if so, where, when and to whom.
The full names, and the dates and places of birth of all lineal descendants, if any, of said decedent; the dates and places of death of any thereof who died prior to the filing of such petition; and the places of residence of all who are then surviving, with the degree of relationship of each of such survivors to said decedent.
Whether any of the brothers or sisters of such decedent every married, and, if so, where, when and whom.
The full names, and the places and dates of birth of all children who are the issue of the marriage of any such brother or sister of the decedent, and the date and place of death of all deceased nephews and nieces of said decedent.
Whether or not said decedent, if of foreign birth, ever became a naturalized citizen of the United States, and, if so, when, where, and by what court citizenship was conferred.
The post-office names of the cities, towns or other places, each in its appropriate connection, wherein are preserved the records of the births, marriages and deaths hereinbefore enumerated, and, if known, the title of the public official or other person having custody of such records.
The nationality of each of the heirs of the decedent.
The street address of each of the heirs of the decedent.
If, for any reason, the petitioner is unable to set forth any of the matters or things hereinbefore required, he shall clearly state such reason in his petition.
At least 20 days before the hearing of the petition, a copy of the petition and notice of hearing must be served on the Attorney General and on the Controller, and the Attorney General may answer the same at his discretion.
If such claim includes a claim to real property or any interest therein, the petitioner shall record in the office of the county recorder of the county in which the real property is situated, a notice of the pendency of the petition containing the object of the action and a description of the property in the county affected thereby. From the time of filing such notice for record only, shall a purchaser or encumbrancer of the property be deemed to have constructive notice of the pendency of the action, and only of its pendency against parties designated by their real names.
The court must thereupon try the issue as issues are tried in civil actions; and if it is determined that such person is entitled to the money or other property or the proceeds thereof, it must order the property, if it has not been sold, to be delivered to him, or if it has been sold and the proceeds thereof paid into the State Treasury, it must order the Controller to draw his warrant on the Treasurer for the payment of the same, but without interest or cost to the State. A copy of such order, under the seal of the court, shall be a sufficient voucher for drawing such warrant.
All persons who fail to appear and file their petitions within the time limited are forever barred; saving, however, to infants and persons of unsound mind, the right to appear and file their petitions at any time within the time limited, or within one year after their respective disabilities cease.
Ca. Civ. Proc. Code § 1355