 Pope Gregory I reputedly made the pun, "Non Angli, sed Angeli" ("Not Angles, but Angels"), after a response to his query regarding the identity of a group of fair-haired Angles, slave children whom he had observed in the marketplace.After the Norman Conquest, the law no longer supported chattel slavery and slaves became part of the larger body of serfs.Barbary pirates and Maltese corsairs both raided for slaves and purchased slaves from European merchants, often the Radhanites, one of the few groups who could easily move between the Christian and Islamic worlds.