For places named in honour of this saint, see Saint-Ouen.
Audoin or Audoen, Dado to his contemporaries. (609 in Sancy close to Soissons - 686 in Clichy), was a Frankish bishop, courtier, chronicler, and Catholic saint.
Audoin lived at the court of Clotaire II and later at the court of Dagobert I, who made him his referendary. He was part of a group of young courtiers like Saint Wandrille and Saint Didier of Cahors and was a close friend of Saint Eligius, whose vita he wrote; Audoin was consecrated bishop of Rouen in 640. As bishop of Rouen he produced a set of rules for monks that in his time was known as Ruh Audoin. Given the habit in the Low Franconian and Old Dutch language to not always pronounce a d his name developed into Ouen and his rules became to be known as Rouen and became the name of the seat of his bishopric. He founded Rebais Abbey, and sent missionaries to areas that were still pagan.
