Honoré III, Prince of Monaco

Honoré III
Prince of Monaco
Reign 7 November 1733 – 19 January 1793
Predecessor Jacques I
Successor National Convention
as de facto ruling government
Honoré IV
as next reigning monarch
Born (1720-11-10)10 November 1720
Died 21 March 1795(1795-03-21) (aged 74)
Spouse Maria Caterina Brignole
Issue Honoré IV, Prince of Monaco
Joseph Grimaldi
Full name
Honoré Camille Léonor Grimaldi de Goyon de Matignon
House Grimaldi
Father Jacques I, Prince of Monaco
Mother Louise Hippolyte, Princess of Monaco

Honoré III (10 November 1720 – 21 March 1795) ruled as Prince of Monaco and was Duke of Valentinois for almost sixty years from 1733 to 1793. Honoré was the son of Jacques I, Prince of Monaco and his wife, Louise Hippolyte, Princess of Monaco.

Honore the first to the left with his siblings

On 20 May 1732, he moved to Hôtel Matignon in Paris with his father and remained there, even after the proclamation in 1733 of him as Prince of Monaco. Antoine Grimaldi, le Chevalier de Grimaldi, acted as regent for the prince between 1732 and 1784, when Honoré chose to reside in Paris. This situation remained the same for half a century until Antoine's death in 1784, when Honoré III was already 64 years old. Although he was open to the revolutionary ideas of the time, he was imprisoned on 20 September 1793. At his liberation a year later, he was ruined, and his property under seal.


While in Paris, it was suggested that he marry Marie Louise de La Tour d'Auvergne, only daughter of Charles Godefroy de La Tour d'Auvergne and his wife Maria Karolina Sobieska, grand daughter of John III Sobieski and an older sister of Maria Clementina Sobieski. The marriage never materialised and as such, in 1751, he married Maria Caterina Brignole (d. 1813).

The couple had two children; Honoré IV, Prince of Monaco and Joseph Grimaldi (10 September 1763 – 28 June 1816) before divorcing in 1770, and Marie-Catherine married the Prince de Condé in 1798.


Preceded by
Jacques I
Sovereign Prince of Monaco
Duke of Valentinois

Succeeded by
Honoré IV
Hereditary Prince of Monaco
Marquis of Baux

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