Derwela of Cornwall

Derwela of Cornwall (Derwela of Cornouaille) is a legendary Breton saint, supposedly born in 468, the eldest daughter and first child of King Budic of Cornouaille and of Elena of Anaumide. She is commemorated on 18 March, together with Dervel, Derwell and Derwella. Her brothers were Miliav, the eldest of the sons, first prince, then king of Cornouaille, killed by his younger brother Rivod; Rivod, prince and regent; Amwn Ddu, who married Anna of Gwent; Umbrafel, husband of Afrella (Arilda) of Gwent; and Iaun Reith, the youngest, who led the people of Cornouaille to Armorica, from which Brittany was later formed. Her family being closely linked to the monarchy of Gwent, Derwela married Ynyr, ruler of Gwent. A saint venerated locally, from the Breton tradition; the story is legendary.