Since a Taulas is among Arthur’s knights in the list Chrétien de Troyes begins in line 1691 of Erec and Enide, and since Chrétien tells us that he never tired of arms, one can seriously doubt that he should be identified with Malory’s apparently wicked giant Taulas, who spent seven years hiding in his own castle.
In Lancelot, however, lines 5824-5842, Chrétien mentions a Taulas of the Desert fighting in the Noauz tournament, carrying a fine shield which came from Lyons on the Rhone and had been presented to him for some notable service, but which is not otherwise described.
See also
Taulat the Great | The Legend of King Arthur
Source
Vulgate Lancelot | 1215-1230