Saint Peter Damian or Petro Damiani (c. 1007-1072 or 1073) was a monk and cardinal under the reign Pope Leo IX. He was canonized in 1828.
Pierre Payer, a member of the Department of Philosophy of Mount Saint Vincent Unviersity, holds a Ph. D. from the University of Toronto. He has published several articles dealing with medieval thought and is currently working on a book on sexuality in the early Middle Ages.