House is purchased by my Grandfather from his own income. After my grandfather death, as he mentioned his personal dairy property has been shared between my Dad & family members.
(My Grand Father is having Three sons and two daughters)
After my grandfather death, my grandmother has transferred House to My Father name and except my Grandmother, none of them signed or did not made any property agreement.
Today one of my Dad younger brother claiming a portion from house, is he legally valid to claim a portion of property?