Property A, an 8-acre piece of land, was jointly purchased by the great-grandfather and grandfather in 1937. When the great-grandfather died in 1941, the grandfather, as his only son, inherited the property, even though he had three sisters. When the grandfather died in 1979, the property passed to his only son, the father, who then changed the patta (title) to his name. The original land document is in the names of the great-grandfather and grandfather. Land title patta document is in the name of Father.
Father bequeathed the property of 8 acres only to his elder son because the younger son had married outside their caste, and father kept his younger son away from the family. Father died in 2024 and the will came into effective.
Does the younger son have a legal right to a share in this 8-acre property?
Esteemed advocates, please clarify the legal complications.