My grandfather was born in over in the UK and now has both a EU and Canadian Passport. Right now all I have in a Canadian passport but I would like to apply to get an EU passport for when I travel over there to see my son. My brother applied last year and needed to prove my parents got married and give a copy of both of their birth certificates, is there a list that will tell me what I need? Or any other helpful websites that I get get forms from?