Texas Family Code
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 parents 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.
Source
Last accessed
May. 21, 2019