The ruler of Tintagel in Chrétien de Troyes’s Perceval. He may be identical with Chrétien’s Thiebaut. Tiebaut raised Sir Meliant of Lis, who fought against Tiebaut for Tiebaut’s daughter.
Tiebaut, a common name at the time of Chrétien’s writing, appears in Ulrich’s Lanzelet as Tybalt. Wolfram calls him Lyppaut, and Heinrich von dem Türlin calls him Leigamar.