Mine's just my name. With a name that unusual, there's no need to worry about there being another one around.
This is supposedly who I'm named after as someone/a character that my biological father liked:
https://en.wikipedia.org/wiki/Fireball_500
My mom changed it to '-dra' to be more feminine. Her middle name is Lee so that is also why. She has never explained the second capital letter despite being asked multiple times. She just shrugs her shoulders.