Character Name Help!

Hi! Could you help me? I actually have been thinking of changing a character's name for a while now. I have a character named Calren that's a prince, but the thing is his nickname would be the same as another character's and it just doesn't seem to fit him anymore with how I've changed his story. He's a fantasy character, a Roman dragon, that's attempting to abandon his crown to help the rebellion peacefully. This is partially because he believes the monarchy should end and partially out of spite towards his remarried father. I'm trying to think of a name that fits a royal title but still sounds semi-normal. I'm not looking for any name that starts with a certain letter, any ideas?

Nicholas fits the character well! Thanks for the help, I'm terrible at names lol