Caradawc, Cradawc, Cradawg
Son of Iaen, brother of Sulyen, Bradwen, Moren, Siawn, and Teregud.
One of King Arthur’s warriors in Welsh legend, from Caer Dathal. He was related to Arthur through Uther.
In Bonedd y Arwyr he is, together with his brother Siawn, said to be related to Arthur through his sister’s marriage to Arthur. They are called gwyr Kaer Tathal (‘men of Caer Dathal’).
The name seems to be the source of the French Caradocs.
Source
Culhwch and Olwen | Late 11th century