property(House) belonged to a parent who is no more , who had four sons A,B,C,D.
the parent gave the house as a GIFT to A and B only in the year 1988 that only A and B can enjoy .in the form of will and registered.
A has three children and B is dead now and he is single , unmarried and no children.
after the death of B , now children of C and D is claiming for B's part ..
are C and D 's children have leagal rights to claim ?