Fairytale name for a horse!?

I'm writing a fairytale about a girl and her horse. I need a fairytale name for a horse. I figured all you horse people (like myself) may be able to help me. (GO HORSE LOVERS!!! YAY!!!) My friends thought of Hero, Duke or Chief. The girl's name is going to be Arabella (Someone on here named their horse that, and I fell in love with the name.) , if you can think of a better one for her that would be appreciated. Here's what the horse will look like a href="http://i587.photobucket.com/albums/ss319/Just_been_jinxed/joyscamera058.jpg" rel="nofollow"http://i587.photobucket.com/albums/ss319…/a