Fragan came from Great Britain, and was a Prince of Albany in Scotland.
He was the husband of Gwenn and father of the twins Jacut[2][3] and Guethenoc,[2][3] of Guénolé, and of Creirwy, Winwaloe,[4] son of Prince Fragan (or Fracan) and Teirbron.
[2][3] He is also a cousin of Riwall and stepfather to Cadfan, son of Eneas Ledewig (or Aeneas of Brittany) and Teirbron.
[5] He left Britain and moved to Ploufragan (Côtes-d'Armor) towards the end of the 4th century or perhaps as late as 418 AD.
[8][9] Fragan is also known for having amassed a small army in haste to repel a larger force of pagan pirates at the battle of Lochrist.