California Code, Welfare and Institutions Code - WIC § 14055

(1) The child's father, mother, grandfather, grandmother, brother, sister, stepfather, stepmother, stepbrother, stepsister, great grandparent, uncle, aunt, nephew, niece, great-great grandparent, great uncle or aunt, first cousin, great-great-great grandparent, great-great uncle or aunt, or first cousin once removed.

(2) The spouse or registered domestic partner of one of the relatives identified in paragraph (1), even after the marriage is terminated by death or divorce or the domestic partnership has been legally terminated.