Phoenix29, Hum, what I found is that it's the Portuguese and Spanish variant of Ralph (Raoul in French), which itself is derived from Raðulfr (Radulf) in Old Norse (North Germanic) so yeah, I don't know either xD It's possible that your name came from Spain during colonial times I suppose but anyway =P
Ideally both but X for starters. Looking at your avatar it seems you're gonna choose Y instead, no? ^^