War of the Euboeote Succession

War of the Euboeote Succession
Map of the Byzantine Empire and Latin Romania in 1265
Date 1256–1258 Location Euboea, Central Greece, Peloponnese Result Achaean victory
Belligerents
Principality of Achaea Republic of Genoa	Republic of Venice Lordship of Athens and Thebes Triarchs of Negroponte Lordship of Salona Marquisate of Bodonitsa
Commanders and leaders
William II of Villehardouin	Guglielmo of Verona Narzotto dalle Carceri Paolo Gradenigo Marco Gradenigo Guy I de la Roche

The War of the Euboeote Succession^[1] was fought in 1256–1258 between the Prince of Achaea, William of Villehardouin, and a broad coalition of other rulers from throughout Frankish Greece who felt threatened by William's aspirations. The war was sparked by Villehardouin's intervention in a succession dispute over the northern third of the island of Euboea, which was resisted by the local Lombard barons (the "triarchs") with the aid of the Republic of Venice. The Lord of Athens and Thebes, Guy I de la Roche, also entered the war against William, along with other barons of Central Greece. Their defeat at the Battle of Karydi in May/June 1258 effectively brought the war to an end in an Achaean victory, although a definite peace treaty was not concluded until 1262.