patron of St Erth, Cornwall. He occurs in Irish martyrologies of the 9th century under 2 November; the 12th-century martyrology of Gorman calls him ‘Erc of Slane, bishop of Lilcach and from Ferta Fer Feic beside Sid Truim from the West’, C.C.K. gives his feast as 31 October. A distich ascribed to Patrick runs:
Whatever he judged was rightly judged:
Whosoever gives a just judgment
Shall receive the blessing of bishop Erc.
William Worcestre said his relics were in St Paul's, London, confusing him with Erkenwald.
G. H. Doble, The Saints of Cornwall, i (1960), 95–6.