Help deciding a wizard name?

Okay, so I have this character that's in a story I'm writing. He's a wizard and kind of broody and mean and really good looking but is actually pretty caring towards the main girl. I already have the girls name, and the wizards first name which is Alexander. I can't decide between his last name though. Alexander Pax, or Alexander Anderson? He would be called by his last name, not his first, so this is more important...which do you like better? Pax or Anderson?