A mute knight in Arthur’s court, sworn to refrain from speaking until he saw the best knight in the world. A lady in court, named Cunneware, refrained from laughing for the same reason. When Perceval came to court, Cunneware laughed and was beaten by an insulted Sir Kay.
Antanor reproached Kay and predicted retribution for his actions. In response, Kay tanned Antanor. Perceval later revenged Kay’s abusive deeds by breaking his arm and collarbone in a joust.
Antanor is called Kulianz the Fool in Diu Crône.
Source
Parzival | Wolfram von Eschenbach, 1200-1210