Conomor

He is widely regarded as one of the probable sources for the myth of Bluebeard and possibly also of Tristan's uncle King Mark of Cornwall.

The name Conomor is mentioned in Cornish genealogies, and may have established himself in Brittany after a youth in Cornwall, i.e. Dumnonia.

It is possible that the story of Tréphine and Trémeur is a garbled version of Conomor's attempts to kill Judael, his step-son.

According to Lester K. Little, "Conomor was serving as regent for a nephew who was too young to take up the kingship he had inherited; the main grievance against him was his relentless campaign to have the boy killed.

"[3] Samson also prevailed on the Frankish king Childebert I to abandon his support for Conomor as protector of the English Channel and to release Judael.

Judael then joined an expedition led by Chlothar into Brittany and killed Conomor in a battle in the Monts d'Arrée near Le Relecq, Plounéour-Ménez, which is named from the relics of the victims.

And when both armies were gathered and encamped on the same plain and Chramn with the Bretons had marshaled his line against his father, night fell and they refrained from fighting.

During the night Chonoober, count of the Bretons, said to Chramn: "I think it wrong for you to fight against your father; allow me tonight to rush upon him and destroy him with all his army."

[6] Nor, though the link has repeatedly been made, is there evidence that a Cornish monument dating to roughly this period and dedicated to the son of a "Cunomorus" refers to the Conomor who ruled in Brittany.

According to the archaeologist Ralegh Radford and the Arthurian specialist André de Mandach, it reads "Drustanus hic iacit cunomori filius" (here lies Tristan, son of Conomor).

However, multiple earlier transcriptions fail to support this reading, and instead suggest the monument was erected in memory of one "Clusius".

[10]The writer Jean Markale developed this argument, suggesting that the Tristan legend originated in Ireland, but that the names of the characters derive from actual people in Cornish history whose lives involved "the rivalry of a father and son for the same woman", the father being Conomor/Mark and the son Tristan.