[2] Antoine Grimaldi, le Chevalier de Grimaldi, acted as regent for the prince between 1732 and 1784, when Honoré chose to reside in Paris or the Château des Matignon in Normandy.

This situation remained the same for half a century until Antoine's death in 1784, when Honoré III was already 64 years old.

While in Paris, it was suggested that he marry Marie Louise de La Tour d'Auvergne, but the marriage never materialised.

The couple had two children; Honoré IV, Prince of Monaco and Joseph Grimaldi (10 September 1763 – 28 June 1816) before legally separating in 1770, and Marie-Catherine married her long-time companion Prince de Condé in 1798, after her husband's death.

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