Section 457:2 Marriages Prohibited.
No person shall marry his or her father, mother, father's brother, father's sister, mother's brother, mother's sister, son, daughter, brother, sister, son's son, son's daughter, daughter's son, daughter's daughter, brother's son, brother's daughter, sister's son, sister's daughter, father's brother's son, father's brother's daughter, mother's brother's son, mother's brother's daughter, father's sister's son, father's sister's daughter, mother's sister's son, or mother's sister's daughter. No person shall be allowed to be married to more than one person at any given time.
Source. RS 147:2. CS 156:2. GS 161:2. 1869, 9:2. GL 180:2. PS 174:2. PL 286:2. RL 338:2. RSA 457:2. 1965, 46:1. 1987, 218:2, eff. July 17, 1987. 2009, 59:1, eff. Jan. 1, 2010.