(n.) In ancient Greece, the governor or perfect of a province; in modern Greece, the ruler of an eparchy.

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