 In 513, King Arthur landed on the island of Cézembre, just facing the coast, with the new King of Armorica, Hoël I.This new regime favoured the settlement of missionaries from Cornwall, and in particular one of King Hoël's sons, Saint Lunarius (or "Léonor"), together with Saint Pompeius (or Coupaia), Saint Tugdual's brother, or Saint Sève and numerous monks and secular priests, who started clearing the local forest of Ponthul and erected a first chapel on the location of the present "Old Church".According to one story, the local bishop granted a bell to St Lunarius and, with it, authority over all the hamlets lying within the sound of the bell.