Clerical Mistake

I am a retired Lekhpal from Revenue Department (UP India).In 1993 ,there was a clerical mistake done by me.Original name of land owner was Punnu Yadav and name changed in official document as Munnu Yadav. Unfortunately both have same father name and same location.In 1995 i transferred to another location and no one checked this error.In 2011 Munnu Yadav died and then his wife came to Revenue office and ask for transfer the land.In 2011 current Lekhpal Transferred the land to Munnu's wife on the basis of official document.In 2014 Munnu's wife donated some piece of land to Government for Public office building.But in 2017 Original land owner which name was Punnu Yadav returned and wanted his land.In 2018 I submitted a note to District Magistrate that it was clerical mistake and he approved it and then Punnu Yadav again got his land.But Punnu Yadav wants that land also which was donated by Munnu's wife to Government for Public office building and he filed a case against me and Munnu's wife.Please help to to get rid of this situation.