costume suggestions?

Whom could I claim to be impersonating, on Hallowe'en, if I wore my long, dark forest-green velveteen dress that I got at the Rennaissance fair? The only good suggestions I've had so far are elves (I could do that, but would like other ideas) and Maid Marian (for which I need a quiver). I also may have a chance to go to the Garment District on Monday to supplement this. Before you ask, yes, I'm basically being girly and want to have an excuse for wearing the dress.