Marduc
A lord who appears to mastermind the kidnapping of Guinevere on the Modena Archivolt, where he is represented on the battlements with Winlogee (possibly Guinevere).
Caradoc, who served him, abducted the queen, and both Carados and a churl named Burmalt guarded his castle. It appears that Arthur’s warriors, led by Gawain, managed to penetrate the defenses and rescue the queen.
Some scholars have suggested that he represents Mordred.
Source
The Modena Archivolt (Italian sculpture) | 1120-1140