Prince Joseph of Monaco

Prince Joseph of Monaco (Joseph Marie Jerôme Honoré; 10 September 1763 – 28 June 1816) was a Monagasque prince and brother of Honoré IV, Prince of Monaco. He served as regent of Monaco on behalf of his brother in 1814-1815.

Prince Joseph
Prince Joseph of Monaco.JPG
Born10 September 1763
Hôtel Matignon, Paris, France
Died28 June 1816(1816-06-28) (aged 52)
Paris, France
(m. 1782; died 1794)
  • Frances Rainford
  • Marie Camille, Marquise de La Tour-du-Pin
  • Athénais, Marquise de Louvois
  • Princess Delphine
Joseph Marie Jerôme Honoré Grimaldi
FatherHonoré III, Prince of Monaco
MotherMaria Caterina Brignole-Sale


He was the second son of Honoré III, Prince of Monaco and his Genovese wife Maria Caterina Brignole-Sale. He married Françoise de Choiseul, a niece of Étienne François, duc de Choiseul, on 6 April 1782. The marriage produced three children, only one of whom left descendants.

During the French Revolution, he was often absent on foreign travels in order to secure loans for his father. During the Terror of Robespierre, these foreign trips placed him under suspicion for counterrevolutionary activity. He did in fact support the royalist uprising in Vendée. This caused him to be declared a traitor in his absence, and resulted in the arrest of his wife, father, brother and sister-in-law in Paris. He lived in exile in Great Britain, and returned to France in 1795. When his brother became Prince of Monaco in 1814, but was unable to manage the affairs of state because of his health condition, Joseph was appointed regent. He was replaced as regent of Monaco in 1815.

Prince Joseph's first wife was executed in July 1794.

Marriages and IssueEdit

He was married firstly to Marie Thérèse de Choiseul, daughter of Jacques Philippe de Choiseul, Duke of Stainville and Thérèse de Clermont d'Amboise.They had issue:

  • Princess Marie Camille of Monaco (22 Apr 1784 – 8 May 1879); married René, Marquis de La Tour-du-Pin, and had issue.
  • Princess Athénais of Monaco (2 June 1786 – 11 September 1860); married Auguste Le Tellier de Souvré, Marquis de Louvois, and had no issue.
  • Princess Delphine of Monaco (born 22 July 1788); died young.

He was remarried to Frances Margaret Powell, ex wife of Robert Samuel Rainford (1780-1850), daughter of Thomas William Powell and Frances Brewer. They had no children.



  • Françoise de Bernardy, Princes of Monaco: the remarkable history of the Grimaldi family, ed. Barker, 1961