Cadwr, Carados of Cornwall
Ruler of Cornwall, variously described as king or a duke, and father of Constantine. Geoffrey of Monmouth tells us that Cador was of Roman stock but does not name his father. A Welsh translation of Geoffrey makes him the son of Gorloïs, Igerne’s (Igraine) first husband, and in Geraint, his father is called Gwryon. He married a sister or half-sister of Arthur.
According to Geoffrey, Guinevere was raised in his household (from which Thomas Hughes seems to assume that he was Guinevere’s father). The chronicler John Hardyng makes him the son of Igerne, and therefore Arthur’s half-brother.
Cador appears in Malory as a knight of the Round Table, one of Arthur’s counselors, and a trusty officer in the campaigns against Gaul and Rome. After the first battle of the war, Cador escorted the prisoners captured to the prison in Paris. The Emperor’s men lay in ambush to capture the prisoners, but Cador and Lancelot, with their knights, slew them all. As the commander of the rear guard at the battle of Soissons, Cador helped Arthur to finally defeat Lucius.
A Cador, the son of the King of Cornwall, brother of Guignier and friend of Carados Briefbras, may be the same character, or even the son of this Cador. Some sources allege that this Cador was the guardian of Guinevere prior to her marriage to the young Arthur. The name may be a variant of “Carados” – in Malory XIX, 11, Constantine is called “Sir Carados’ son of Cornwall”.
Historia Regum Britanniae | Geoffrey of Monmouth, c. 1138
Brut | Layamon, late 12th century to mid-13th century
Breudwyt Rhonabwy | 13th century
Geraint and Enid | 13th century
Alliterative Morte Arthure | c. 1400
Le Morte Darthur | Sir Thomas Malory, 1469-1470
The Misfortunes of Arthur | Thomas Hughes, 1587