[url=http://harrypotter.wikia.com/wiki/Sacred_Twenty-Eight]Here's[/url] something that people might find useful if they want to play a character from a pureblood family.  The list is from the 30's, so there would be other names, but these ones we know for sure, and there's plenty of them.  

The good thing about this timeline is that it's far enough out of the way that we don't have to worry about stepping on toes.