Delayed certificates of birth issued pursuant to this chapter shall not be considered as evidence in any action or proceeding involving estates of decedents or in any proceeding to establish heirship unless the affidavit of at least one person who knew the facts was filed at the time of obtaining the certificate.
Source:
Section 102530, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=102530..