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Honoré III
Honoré III, Prince of Monaco by Jean Baptiste van Loo.jpg
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
Torigni-sur-Vire, France
Died 21 March 1795(1795-03-21) (aged 74)
Paris (France
Spouse Maria Caterina Brignole
Issue Prince Honoré IV
Prince Joseph
Full name
Honoré Camille Léonor Grimaldi
House House of Grimaldi
Father Jacques I of Monaco
Mother Louise Hippolyte of Monaco

Honoré III, Prince of Monaco (Honoré Camille Léonor; 10 November 1720 – 21 March 1795) was a reigning prince of the small state of Monaco. He succeeded his mother Louise Hippolyte and is to this day still one of the longest reigning European rulers.

Brief biography

The eldest surviving son of Princess Louise Hippolyte of Monaco and her husband Prince Jacques

In May 1732 he moved to Paris to be with his father till he was officially proclaimed the prince of Monaco. Antoine Grimaldi, the Chevalier de Grimaldi, acted as regent for the prince between 1732 and 1784, when Honoré chose to live in Paris. This situation remained the same for half a century until Antoine's death in 1784,


On 5 June 1757 he married Maria Caterina Brignole a member of one of the most powerful and wealthy familys in the Republic of Genoa. The had two sons before divorcing in 1770.


  1. Prince Honoré IV of Monaco (17 May 1758 – 16 February 1819) married Louise d'Aumont and had children.
  2. Prince Joseph of Monaco (10 September 1763 – 28 June 1816) married Marie Thérèse de Choiseul and had children.

Titles and styles

  • Edwards, Anne. The Grimaldis of Monaco. William Morrow, 1992.
  • Maclaga, Michael and Louda, Jiri. LINES OF SUCCESSION; Heraldry of the Royal Families of Europe. MacDonald & Co., 1981; Little, Brown & Co., 1999; Time Warner Books, UK, 2002 ISBN: 0-7607-3287-6
  • Maurizio Ulino, L'Età Barocca dei Grimaldi di Monaco nel loro Marchesato di Campagna, Giannini editore, Napoli 2008. ISBN: 978-88-7431-413-3

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