[Does not occur in the Roman Martyrology.]
William of Malmesbury informs us that the history of S. Rumon's life was
destroyed by the wars, which devastated England. He was a bishop; but of
what see we do not know. Many of the early Saints of the Church in
Cornwall, Wales, and Ireland, received episcopal consecration, without
jurisdiction. His body was preserved at Tavistock, in Devonshire, where
Ordulf, Earl of Devonshire, built a church under his invocation, before
the year 960.