エピロス専制侯国
The Battle of Achelous () took place in 1359 near the river Achelous, in Aetolia, modern Greece fought between Albanian troops, under Peter Losha and John Spata, and forces of the Despotate of Epirus, under Nikephoros II Orsini. The Albanians defeated Orsini's army, which suffered massive casualties during the battle. The battle established two despotates from regions previously part of the Despotate of Epirus: the Despotate of Arta and the Despotate of Angelokastron and Lepanto.