The Despotate of Epirus was a Byzantine successor state established in the 13th century after the Fourth Crusade. It was located in the region of Epirus in northwestern Greece and played a significant role in the political landscape of the time. The despotate was known for its cultural and economic development, as well as its efforts to restore Byzantine authority in the area. The despotate was ruled by the Angelus family, with notable leaders like Michael II Komnenos Doukas. It faced challenges from neighboring powers, including the Kingdom of Albania and the Ottoman Empire. The Despotate eventually fell to the Ottomans in the late 15th century, marking the end of its influence.