Pendragon

(n.) A chief leader or a king; a head; a dictator; -- a title assumed by the ancient British chiefs when called to lead other chiefs.

Thesaurus Entries

Dalai Lama, Holy Roman Emperor, Inca, Kaiser, ardri, beg, beglerbeg, burgrave, cacique, caesar, cham, collector, czar, dey, eparch, exarch, gauleiter, governor, governor-general, kaid, khan, khedive, lieutenant governor, mikado, nabob, nawab, negus, padishah, palatine, pendragon, pharaoh, proconsul, provincial, rig, sachem, sagamore, satrap, shah, sheikh, shogun, stadtholder, subahdar, tenno, tetrarch, tycoon, vali, vice-king, viceroy, wali