If any person die under age and unmarried his estate, derived by descent or devise from his father or mother, shall descend to his brothers and sisters, or their legal representatives if any, to the exclusion of the other parent.
RSA 561:2
RS 166:2. CS 176:2. GS 184:2. GL 203:2. PS 196:2. PL 307 :2. RL 360:2.