Bledric ap Custennin

Bledric ap Custennin (also known as Blederic, Bredrice, Peledric, Bletius, Bledrys, Bledrig, Bletricius or Bledericus) was a 6th and 7th century ruler of Dumnonia (now the English West Country).

The actual status and reality of Bledric is difficult to ascertain as he figures in much old Welsh literature variously as "King", "Duke" or "Prince" of Devonshire and/or Cornwall. He was described as Duke of Cornwall by c.603, and an ally of northern Welsh kings.

The fullest account of Bledric's life comes from Geoffrey of Monmouth's pseudohistorical Historia Regum Britanniae where he is numbered amongst the legendary Dukes of Cornwall. Here Bledric, Duke of Cornwall, was the commander of the allied British armies which included King Cadvan of North Wales (Cadfan ap Iago of Gwynedd) and King Margadud of South Wales (probably Maredydd ap Rhain of Dyfed) at the Battle of Bangor-is-Coed. He joined battle with the army of Æthelfrith of Northumbria who had just slain 1200 monks, and succeeded in wounding Æthelfrith and defeating the Angles but being slain himself.

Some authors have Peredur, son of Cado ap Gerren, ruling as king in the fl. 7th century, descended from a different line of Dumnonian kings from Gerren Llyngesic. This is as given in the Dumnonian king-list derived from Jesus College, Oxford, MS 20.

Bledric was one of three sons of king Constantine (or Custennin) who died in c.560, his brothers being Gerren rac Denau, who he may have succeeded as king, and Domuel (or Dywel). He also had a sister who married Peibio Clafrog, king of Ergyng in South Wales. Bledric may have had two sons, Clemen as given in the Llyfr Baglan (Book of Baglan) who is thought to have succeeded him, and Blethyn as given by Caradoc of Llancarfan.

...
Wikipedia