also known as Ruan, Ronan, and Ruadan, was a brother of Tudwal of Treguier.
Tradition says he was educated in Britain - probably Wales - but that he later accompanied St. Breaca on her return from Ireland to her Cornish homeland. Like Tudgual, he had presumably travelled to Ireland to learn the Holy Scriptures. He is said to have lived in a hermitage on Inis Luaidhe, near Iniscathy, and was eventually raised to the episcopacy. In Cornwall, he founded churches at Ruan Lanihorne (on the River Fal), Ruan Major & Minor (near the Lizard Peninsula), a defunct chapel in Redruth and at Romansleigh in Devon; but he quickly moved on to Cornouaille in Brittany, with St. Senan as his companion.
Rumon met up with St. Remigius in Rheims, which would place him in Brittany around the early 6th century, the probable time of his birth if he was a son of Hoel Mawr. At any rate, he settled first at St. Rénan and then moved on to the Forest of Nevez, overlooking the Bay of Douarnenez. He seems to have acquired a wife, named Ceban, and children at some point. He may be identical with Ronan Ledewig (the Breton), father of SS. Gargunan and Silan. His lady wife took a distinct dislike to Rumon's preaching amongst the local pagan inhabitants and considered him to be neglecting his domestic duties. The situation became so bad that she plotted to have Rumon arrested.
Hiding their little daughter in a chest, Ceban fled to the Royal Court at Quimper and sought an audience with the Prince of Cornouaille. She claimed that her husband was a werewolf who ravaged the local sheep every fortnight and had now killed their baby girl! Rumon was arrested, but the sceptical monarch tested him by exposing the prisoner to his hunting dogs. They would have immediately reacted to any sign of wolf, but Rumon remained unharmed and was proclaimed a holy man. His daughter was found, safe and well, whilst his wife appears to have received only the lightest of punishments. Despite this, her troubling making persisted and Rumon was forced to abandon her and journey eastward towards Rennes. He eventually settled at Hilion in Domnonia, where he lived until his death.
Propers for Rumon of Tavistock - Priest, Monastic, Missionary and Bishop
O ALMIGHTY God, who hast called us to faith in thee, and hast compassed us about with so great a cloud of witnesses; Grant that we, encouraged by the good examples of thy Saints, and especially of thy servant Rumon, may persevere in running the race that is set before us, until at length, through thy mercy, we with them attain to thine eternal joy; through him who is the author and finisher of our faith, thy Son Jesus Christ our Lord. Amen.
The Epistle - Hebrews 12:1-2.
The Gospel - St. Matthew 25:31-40.
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