Laide Semblance
An adventure established by Judas Maccabeus.
It is found in the Livre d’Artus. The “Ugly Appearance” was the image of a fierce creature whose gaze could turn a man to stone. Arthur’s knight Greu delivered the realm of the Wise Lady from its terror, and Merlin dumped it into the gulf of Satellie.
In Der Pleier’s German romances, its counterpart is the head belonging to the demon Vulganus.
Source
Le Livre d’Artus | Early 13th century