William of Malmesbury informs us, that the history of his life was destroyed by the wars, which has also happened in other parts of England. He was a bishop, though it is not known of what see. His veneration was famous at Tavistock, in Devonshire, where Ordulf, Earl of Devonshire, built a church under his invocation, before the year 960. Wilson, upon informations given him by certain persons of that country, inserted his name on this day, in the second edition of his English Martyrology.
- Father Alban Butler. “Saint Rumon, Bishop in England”. , 1866. CatholicSaints.Info. 13 January 2013. Web. 30 April 2017. <>