When a man has a child by a woman whom he afterwards marries, the child, if acknowledged by the man, is, in virtue of the marriage and acknowledgment, legitimated and capable in law of inheriting and transmitting heritable property as if born in wedlock.
D.C. Code § 19-318
Antenuptial children
Sept. 14, 1965, 79 Stat. 699, Pub
Official source: D.C. Law Library (Council of the District of Columbia). Reproduced from public-domain District of Columbia statutes; confirm against the official source for the current text. Not legal advice.