My father has two wifes. I am first wife son. We have a house and right now the house is occupied by second wife and their childrens. I have got "gift settlement" from my father for this house. My father got this house from his grandfathers gift settlement deed mentioning the concerned property should be given to my son(grandfather) and his son(my father) (not daughter). How can i take the posession of that house, and how to get them out.