Can widows claim share in parents property

we are 5 brothers.my mother has divided the property in such a way that 2 elder brothers got 2 separate land and house and were living separately . we rest 3 brothers staying together on same land in same house but different floors. my mother died long back ,also my 2 brothers who were living separately,expired long back.we(3 brothers) are doing the maintenance of the entire house , where my late mother was staying,along with us( 3 brothers) . suddenly my younger brother(between three of us, who was unmarried,expired). now all of a sudden the two widows of my late brothers, claiming a share in there late mothers inlaw and brother inlaw(my late younger brother) property, inspite both of them got the house and land of there respective late husbands. kindly advice me any law is there to prevent both the widows claming my late mothers and late brothers property.kindly note we are hindu by religion