Concept of Ancestral property in Christian religion

My late. grandfather was a Christian (occupation-pastor) has inherited a house from his mother in Andhra Pradesh thru registered will in year 1983 after his mother deceased. His mother got this property from her husband (My grandfather’s father and he was also a Christian) thru a registered gift deed in year 1937. Later in year 1987 my grandfather has demolished the old house built by his mother and father and constructed a new building with 2 floors has four portions of houses. So, now my grandfather has 4 sons and 1 daughter and later in 2004 his second son has passed away (After my uncle passed away his family left the house started living separately after that our families and their family has no talking terms). In year 2010 my grandfather has gifted 2 portions in the above said building to elder son (he was taking care of my grandfather and grandmother in their old age) in registered gift deed and since then said two portions were under him he was paying taxes for those two portions and also electricity bills and they are even changed to his name in municipal records as well. and again in 2018 he gifted remaining 2 portions to 3rd son and 4th son respectively. Now I want to understand if the above said property will be ancestral or self acquired by grandfather.? Is there any concept of ancestral property in Christian religion? Can the deceased son’s wife and children can object and file suit for partition on elder son that he was given two portions as gift deed and they were not given any share ?