My name is S. Kumar and father name is S.Singh.
My wife name is S.N.Dash.
Now I want to change my wife surname as "Singh" ( father/family surname) as I have my surame as Kumar so I want to adopt my family surname for my wife only.
I also want to change my wife siname in passport/bank account / pan card /voter id etc.......
Could you please advice right procedure for the same?