The rights of my mother and unmarried daughter and son on their pension fund and one 70 gaj house

My father (Sub inspector) evicted my mother and us (2 son and 1 unmarried daughter) due to my marriage issues. They are living with me in rented house and my wife is also not like to allow them to stay. Please advise regarding the rights of my mother and unmarried daughter and son on their pension fund and one 70 gaj house by grandfather. My father is going to retired in 1.5 years. What a happy family comes to this tragic face of life. Regarding my marriage: My wife trapped me in marriage in Apr'17. Now, i have 3 month old son and i am managing my marriage and will manage somehow. I am salaried person. My father take tension due to my marriage issues and making trouble to my mother and siblings as i am staying far away. All the relative (Uncles, Mater-uncles,father sister, neighbors) are trying to convince my father since last 1.5 years to forgot those issue and move on. But they finally evicted my mother and sibling in June'19 and saying they will not give any penny and donate to any ashram will go away for all of family and relatives. Please advice.