Katepanikion

• From ca. 971 until the late 11th century, it referred to large circumscriptions comprising several themes and commanded by a doux or katepano. In English, the divisions are usually termed "duchy" or "catepanate".
• In the Palaiologan period, the katepanikion became a much smaller province comprising a fortified town and its surroundings or an island, under a kephale and also termed a kephalatikion.