In 1239, Hugh joined the
Barons' Crusade led by King
Theobald I of Navarre and supported by
Frederick II, Holy Roman Emperor. During this crusade, he was one of the nobles who sought battle with the Muslims against the advice of King Theobald and the Military Orders. Realizing that the expedition was disadvantageous, he opted to withdraw to Ascalon with
Walter IV, Count of Brienne and a few others, avoiding the disastrous
battle of Gaza. Soon after, King Theobald left for France and
Richard of Cornwall arrived. He chose to ally with him, aid in rebuilding
Ascalon and negotiated a peace with
Egypt in 1241. He returned to Burgundy afterwards. Hugh arrived at Cyprus by May 1249 and joined
Louis IX of France on the
Seventh Crusade. He led one of the two camps of the army that crossed during the
siege of Mansurah, the other camp being led by the King of France himself. He was taken prisoner with his king during the
retreat of Fariskur, following the betrayal of a treacherous sergeant. He would not be released until March 1252, as such he returned home. In 1266, Hugh met with
Baldwin II, Latin Emperor, who promised Hugh the principality of
Thessalonica in exchange for reconquering lands lost to
Epirus more than 40 years earlier. The sale would only remain valid until Hugh aided in Baldwin's reconquest and should he fail to uphold his end, the title would pass to
Charles I of Anjou and his heirs. The invasion wouldn't come to pass, as
Pope Gregory X, under the false promise of Emperor
Michael VIII Palaiologos to unite the churches, staved off any attempts. In 1270, Hugh joined the
Eighth Crusade. But after King Louis IX died, he returned home. ==Death==