A rose by any other name

I know I should be thinking about my current novel, not the next one. But that would make this blog way too dull. So to liven things up around here, I'm going to hold a vote to look for a suitable name for my new hero.

He's a European prince who has lived in the States for several years. He's fun and easy-going and adventurous. Now he has to give up his nice life of freedom to return to his duties in the principality, which lies between France, Germany and Switzerland, so names that suit any of those cultures are ideal.

I love the name Sebastian, but used it for the hero of an erotic short story I wrote last year, and though the characters are poles apart, I'd like this one to stand alone. Anyone have any thoughts?

Here are the options up for vote:
A - Sebastian
B - Christian
C - Tristan
D - Fredrik (Rick)
E - Nicholas (Nick)
F - Any other suggestions?

And this is the inspiration for my prince...