California Codes, Code of Civil Procedure - CCP, Part 2 — Of Civil Actions, Title 10 — Actions in Particular Cases, Chapter 4.5 — Special Actions and Proceedings to Clear Title, Article 1 — Identity of Person in Chain of Title, Section 770.050

(a) The petition shall be verified in the manner provided for verification of a complaint.

(b) The petition may be substantially entitled, “In the matter of the determination of the identity of ____” (naming all the persons sought to be identified), and may set forth:

(1) A statement of petitioner’s interest in the property as subsequent owner.

(2) A particular description of the property.

(3) The name or names of the person or persons sought to be identified, setting out the name and a reference to the record of the transaction under which the property was acquired or stands of record and the name and a reference to the record of the transaction under which the property was transferred or stands of record, that the names are the names of the same person, and that the transfers affect the petitioner’s title to the real property.

(4) A prayer that the identity of such persons be established.

(c) As many persons sought to be identified as appear of record in the chain of title to the property may be joined in one petition or proceeding.