Walter VI of Brienne

Walter VI of Brienne (Italian: Gualtieri, French: Gautier, c. 1304 – 19 September 1356), also known simply as the Duke of Athens, was a French nobleman and crusader. He was the count of Brienne in France, the count of Conversano and Lecce in southern Italy and claimant to the Duchy of Athens in Frankish Greece.