Hello Guys, I need help, My grandmother got divorce and had a kid with old husband (my mother) and remarried and had another kid, Now My mom's passport still shows old grand dad's name , Now my grand mother also died and old grand dad also died but my step grandfather still alive and he just have marriage certificate but no divorce paper as that happened in 60s , Can anyone please help me as I am filling form now, what kind of documents should I need to prove my step grand parents relationship with my mom .
Your advice is greatly appreciated.