Rights of legal heirs in property

Our grandfather owned a room in a pagadi system chawl. he died in 1956 leaving behind him his son, our father and 3 daughters. the rent receipt was in our grandfather's name which our father did not get transferred to his name till his date in 1973. we are all 5 brothers and one sister. however in april 2008 remaining 3 brothers only and not our sister made an affidavit stating that as a family settlement this room is now property of myself and my brother. hence me with this brother made indemnity bond indemnifying the landlord and requested to issue rent receipt in our name. accordingly landlord issued a receipt in the name of us, first being my name second being his taking due amount of rent. now this brother of mine died in 2015. His wife is requesting that her be added in place of my brother. my question is does wife of my brother have a share in this room after the death of my brother. reason for this question is my other 3 brothers do not want to add her name in the rent receipt. they have verbally infprmed the landlord and now making fresh affidavit to that effect.