I know someone whose 9 ish yr old boy is Willoughby - Willo for short.
We affectionately tease her for her pretentions, and this particular name made me at first, but Willo is lovely, the name suits him, I like how it sounds, and in a multi-cultural school I don't think there's much name-based teasing because the variety is so wide.
DH is far more conservative with names than me though - doesn't like surnames as first names.