Saint Corentin (Sant Korentin, or Corentinus or Cury) died round about the year 490. He was the first Bishop of Cornouaille (Quimper), in Brittany.
He had been a recluse at Plomodiern. He visited Sein. His cult spread throughout S.W. England, where he was known as St. Cury.
His feast day is on December 12.
There's a legend on Sein that tells about Corentin miraculously changing the direction of the wind during a big storm
thus saving the island fishermen.