Despotate of Epirus
The territory of this despotate at its greatest extent (1374–1403) was from the Corinth Gulf to Acheron River in the North, neighboring with the Principality of Gjirokastër of John Zenevisi, another state created in the area of the Despotate of Epirus. The Despotate of Epirus managed to control in this period only the eastern part of Epirus, with its capital in Ioannina. During this period the Despot of Epirus Thomas II Preljubović was in an open conflict with Gjin Spata. In 1375, Gjin Bua Spata started an offensive in Ioannina, but he could not invade the city. Although Spata married with Thomas' sister, Helena, their war did not stop.