My Fathers, expired brothers expired wife, wife who married second time after my uncles death and got a son in new family, she stayed in our joint property house with her son and Second husband, now she and her second husband expired leaving back her young son 31yo, DO THE SON HAVE ANY RIGHT ON THE HOUSE ? as he do not have our family sur name and no will from his mother , further he has sold the part of the divided joint property , do he have any right?