“Estout the Proud”
Estult, Estut
An evil knight from the Castle Fer in France.
He kidnapped the wife of Tristan the Dwarf and held her in his castle. Tristan the Dwarf enlisted the help of the knight Tristan, and both Tristans faced Estout and his brothers in combat.
Estout and his brothers were vanquished, but Tristan the Dwarf was killed, and Tristan received a poisoned, fatal wound.
Source
Tristan | Thomas of England, 1170-1175