My maternal grandfathers were two brothers. Elder brother (Mr. X) was having only one daughter that was my mummy (mother) and the younger brother (Mr. Y) was having 6 sons and one daughter. In order to keep all the ancestral property within family Mr. Y wrote name of Mr. X as fathers name in the school certificate of 3rd and 6th child belonging to him.
Mr. X was in Govt service and was bed-ridden due to illness before his retirement. In order to claim Govt job, a adoption certificate was prepared showing that Mr. X has adopted 2nd child of Mr. Y. After death of Mr. X, adopted child claimed the Govt job and also got transferred all the properties such as farm land in his name. My mother made no claim for anything in her lifetime. Now she is no more. We are three brothers. Now can we make any claim to get the properties as a legal heir? If yes, what should be the procedure?