I love
Sidney for a boy which is why I can't stand it on a girl. Of course it's still useable on boys. You've heard of the "take back the streets" movement (= neighborhood crime watches)? Well, let's start a "take back the name" movement and start with
Sidney,
Aubrey and
Rory for boys. :-)
Sidney makes me think of Elizabethan England and swashbuckling naval adventurers. I don't know any off-hand, that's just the mental image that I have.
Sidney Josiah is wonderful.