Ruan

Of uncertain origin and meaning. Saint Ruan was probably a brother of Saint Tudwal of Tréguier, but little else is known of him beyond that he was probably an Irish missionary and many churches in Devon and Cornwall in England were named after him. Some authorities have identified him with Saint Ronan who is venerated in Brittany. Should this be true, then his name might be a contraction of Breton Reunan.