Florestan (Tancrède Florestan Roger Louis Grimaldi; 10 October 1785 in Paris – 20 June 1856) was Prince of Monaco and Duke of Valentinois from 2 October 1841 until his death in 1856. He was the second son of Prince Honoré IV and Louise d'Aumont Mazarin and succeeded to the throne on the death of his brother, Honoré V. Early life, education, and military career. Brought up by his mother, he showed an early and strong aptitude for literature. At the age of eleven, he enrolled in the School of Fontainebleau, but did not stay there long.
https://en.wikipedia.org/wiki/Florestan,_Prince_of_Monaco