Family law: parentage: child custody and support.

(1) Under existing law, a man is conclusively presumed to be the father of a child if he was married to and cohabiting with the child's mother, except as specified. Existing law also provides that if a man signs a voluntary declaration of paternity, it has the force and effect of a judgment of paternity, subject to certain exceptions. Existing law further provides that a man is rebuttably presumed to be the father if he was married to, or attempted to marry, the mother before or after the birth of the child, or he receives the child as his own and openly holds the child out as his own. Under existing law, the latter presumptions are rebutted by a judgment establishing paternity by another…