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The 17th-century geographers Hajji Khalifa and Evliya Çelebi record that the province encompassed six kazas ("districts"): Santa Maura (Lefkada), Vonitsa, Angelokastron (in Turkish Enkili-Kastri), Xiromero (Tr. Eksemere), Valtos (Tr. Alto), and Vrachori (Tr. Imrahor).
EOEA's activities were largely confined to Epirus, but Zervas had some control of Aetolia-Acarnania, in the Valtos area.