The Collaborative International Dictionary
Toparch
Toparch \To"parch\, n. [L. toparcha, Gr. ?; ? a place + ? to govern, to rule.] The ruler or principal man in a place or country; the governor of a toparchy.
The prince and toparch of that country.
--Fuller.
Wiktionary
toparch
n. The (l/en: ruler) or (l/en: prince) of a small (l/en: district), (l/en: city), or petty (l/en: state); a (l/en: petty) “(l/en: king)”.