In La Tavola Ritonda, a castle visited by Tristan and Lancelot during the Grail Quest.
Count Sebio of Cologia threw a tournament, offering his daughter to any knight who could defeat him and hundred of his soldiers. Tristan and Lancelot won the tournament and gave Sebio’s daughter to Richevie Ventura, the son of the vavasour who had lodged them.
Lancelot and Tristan then had the town baptized.
Source
La Tavola Ritonda | 1325–1350