Peterhouse is a constituent college of the University of Cambridge, England. It is the oldest college of the university, having been founded in 1284 by Hugo de Balsham, Bishop of Ely and granted its charter by King Edward I. Today, Peterhouse has 226 undergraduates, 86 full-time graduate students and 45 fellows. The modern name of Peterhouse does not include the word "college". The college has five Nobel laureates associated with it, either as former students or fellows: Sir John Kendrew, Sir Aaron Klug, Archer Martin, Max Perutz, and Michael Levitt.