Cerenscus, Saint deacon of Civitas Sagiorum (Seez), under the metropolitan of Rouen, went, with his friend Serenedus, to Rome, where they were ordained deacons. In the Life of St. Serenedus it is stated that after a moderate time the pope ordained them both cardinals of the Church; but this is thought by the Bollandists to be a mistake. Leaving Rome, they entered Gaul, and lived for a time at Mavence. Cerenicus founded the monastery of Cenomanum (Le I Mans), and had one hundred and forty disciples. He lived to a good old age, and was buried in the Church of St. Martin, which he founded, and which was afterwards called after himself. He lived towards the end of the 7th century, and is commemorated May 7.