 The feast of St Cubert is celebrated on the Sunday following 4 October.Gilbert H. Doble included translations of the "Vita Carantoci" and extracts from the "Léon Breviary" in his account of St Carantoc.After reviewing all the evidence he could find he concluded that Carantoc had been the leader of a band of Welsh missionaries who came to the Crantock district to evangelize it; Cubert was among his followers, and after their work in Cornwall was done they went on to Brittany where a district around Léon has place-names and dedications related to these missionary saints.