Hugh IV of Burgundy

Hugh IV (9 March 1213 – 27 October 1272) was Duke of Burgundy from 1218, succeeding his father Odo III, and titular King of Thessalonica from 1266. In 1229 he attacked Theobald IV of Champagne against Blanche of Castile's regency, but was countered. In 1237 he acquired the counties of Chalon and Auxonne from John of Chalon, expanding the duchy along the wine trade.

He crusaded in the Holy Land in 1238–1241, then joined Louis IX's Seventh Crusade, commanding a division at Mansurah in 1250 and sharing the king's captivity that year. Emperor Baldwin II granted him the Thessalonican claim in 1266.