My expired father has left a will to three of his chilldren leaving nothing for the eldest son disheritng stating that he never took care of his parents.We are in pondycherry .MY questions are as follows.my questions are two of the children are intersted to change their names .how can we proceed to do the registration as par the rules in pondycherry and what are the documents needed to do so and how long will it take to get registerd.;another detail,the disherited son had already sent notice asking for share and wants to file case to get syay order.Is it possible to avoid complications and get transferred as per the fathers will.thank u for the response in advance