The Watsons are a Muggle Born family with 29 members currently. We are a lesser known family, as we do not have as many active or outstanding members, but we have potential to become great. As for Houses, we lean heavily on Gryffindor, with a few Hufflepuff and Ravenclaw, and I personally think it's unfortunate we have no Slytherin relatives (yet 
).
Current Members (Only sorted ones, sorry. 
):
Spoiler
Family Page: http://forum.knockturnmc.com/page/family.php?family=watson