When I played my first Legend of Zelda game, A Link to the Past, my mom named my file "BOB". Don't ask why... I'm still not sure, myself why she did that. I usually will go by Amanda or Link, but more recently, I have been going by "Blue" as in Blue Link.
In the original, I believe my file was Buckeye, named after one of my pet gerbils. So... yeah, depending on what my current obsessions/interests are, I will name my file different things. I remember, I once named Link "Minerva" after the Roman Goddess of Wisdom--known as Athena in Greek Mythology. Indeed, Link has many nicknames in my Zelda Games. ^^