From Wikipedia.com
Charles III, Prince of Monaco
Prince Charles III of Monaco (December 8, 1818 - September 10, 1889) was reigning Prince of Monaco from June 20, 1856 to his death. He was the founder of the famous casino in Monte Carlo. He was son to Florestan I of Monacoand Maria Caroline Gibert de Lametz.
Charles was married on September 28, 1846 to Antoinette Ghislaine. He was succeeded by his son Albert I of Monaco. During his reign, the towns of Mentonand Roquebrune, constituting some 80 percent of Monegasque territory, were formally ceded to France, paving the way for formal French recognition of Monaco's independence.
Source: Wikipedia