Sec. 6.201. CONSANGUINITY. A marriage is void if one party to the marriage is related to the other as: (1) an ancestor or descendant, by blood or adoption; (2) a brother or sister, of the whole or half blood or by adoption; (3) a parent's brother or sister, of the whole or half blood or by adoption; or (4) a son or daughter of a brother or sister, of the whole or half blood or by adoption. Added by Acts 1997, 75th Leg., ch. 7, Sec. 1, eff. April 17, 1997.
Consanguinity
Tex. Family Code § 6.201, under Suit For Dissolution of Marriage.
Tex. Family Code § 6.201