Let's start with the most famouse Wizard of his time, Famous enough to be on a Chocolate Frog Card

Albus Dumbledore

Then there's

Hagrid=JKR has said so
Harry
Hermione
Ron

Fred
George
Bill
Charlie
Percy
Ginny
Molly
Arthur

Neville
Dean
Seamus

Katie Bell
Angelina Johnson
Alicea Spinnet
Oliver Wood

Parvati or her sister
Who else?

It's Parvati. Padma is in Ravenclaw.

Don't forget the Creevey brothers and the Marauders!

Sirius Black, Sir Nicholas de Mimsy-Porpington, Albus Dumbledore, Rubeus Hagrid, Angelina Johnson, Lee Jordan, Remus Lupin, Cormac McLaggen, Peter Pettigrew, Lily Evans Potter, James Potter..................

What about the small kid in some book that Harry notices similarites between himself and the kid. Isn't he in Gryffindor.

Wouldn't McGonagall have to be in Gryffindor as well, I'm sorry PROFFESOR

And I am an idiot for missing Lee Jordan

what about Lily and James

not to mention the rest of the mauderers

Lavender Brown...