Everytime with my first name...
I had to fill in my name on a webpage form once and it just said "you must enter your actual name" :-(
Well in my case it is true, well for the surname, it should have an accent but I don't put it, mainly because my legal documents don't have it either and who the fuck nows, next time I write in a contract anf is considered invalid or some dumb shit.
Paul?