From Wikipedia.com
Honoré III, Prince of Monaco
Prince Honoré III (November 10, 1720
-March 21, 1795) ruled the Principality of Monaco for almost sixty years from 1733 to 1793. He son of Jacques François Leonor Grimaldi, Prince de Monaco, Duc de Valentinois and Louise Hippolyte de Monaco, Princesse de Monaco, Duchesse de Valentinois.
Source: Worldroots