Gaud d'Évreux was a 5th-century prelate who served as the Bishop of Évreux from 440 to 480. Born into a prosperous Breton family, he dedicated himself to restoring Christian practice in his region following the death of Saint Taurin. After four decades of leadership, he retired to live as a hermit in the forests near Scissy. He passed away in 491 and is recognized as a saint in the Catholic and Orthodox traditions.