Florestan I, Prince of Monaco
（重定向自Florestan）
![](/Images/godic/202501/13/FlorestanI-1-2851.png")
![Royal Monogram of Prince Florestan I of Monaco](/Images/godic/202501/13/Royal_Monogram_of_Prince_Florestan_I_of_Monaco.svg2851.png")
Florestan I, Prince of Monaco (10 October 1785 in Paris – 20 June 1856) was Prince of Monaco and Duke of Valentinois from 2 October 1841 until his death. He was born Tancrède Florestan Roger Louis Grimaldi 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.