The Despotate of the Morea was a semi-autonomous appanage of the later Byzantine Empire. The Byzantines retook part of the Peloponnese in Southern Greece in 1262 CE, but the Morea was only officially governed by semi-autonomous despots of the imperial Kantakouzenos and Palaiologos families starting in 1349 CE. The Despotate of the Morea would end up outlasting the Byzantine Empire itself, and the final part of the territory would not fall to the Ottomans until 1461 CE.
This is a companion discussion topic for the original content at https://www.worldhistory.org/Despotate_of_the_Morea/.