Of course there are !!!!!!!!!! If you read the 7th book you will see that Fenir Greyback said "there aren't many mudblood sytherins" --Beautiful altar 08:38, October 18, 2009 (UTC)

Like Beautiful altar said yes there could be but most times unlikely. Like every other house at Hogwarts School they have certain characteristics, one being Half-blood or Pure-blood most of time.--Profiteor 12:46, October 18, 2009 (UTC)

And of course,that also happens. you actually never know....if ure cunning enough...then u can be a sytherin...--Beautiful altar 16:44, October 19, 2009 (UTC)beautiful altar