Princess Stéphanie of Monaco
Princess Stéphanie of Monaco, Countess of Polignac( Stéphanie Marie Elisabeth Grimaldi; born 1 February 1965) is the youngest child of Rainier III, Prince of Monaco, and the American actress Grace Kelly.
She is the younger sister of Albert II, Prince of Monaco, and Caroline, Princess of Hanover.
Currently 14th in the line of succession to the Monegasque throne, she has been a singer, swimwear designer and fashion model.
Princess Charlotte, Duchess of Valentinois
Princess Charlotte of Monaco, Duchess of Valentinois( Charlotte Louise Juliette Grimaldi; 30 September 1898 – 15 November 1977), was the daughter of Louis II, Prince of Monaco, and the mother of Rainier III, Prince of Monaco.
From 1922 until 1944, she was the Hereditary Princess of Monaco, heir presumptive to the throne.
Maria Caterina Brignole
Maria Caterina Brignole( or Marie- Christine de Brignole; 7 October 1737 – 18 March 1813) was Princess consort of Monaco by marriage to Honoré III, Prince of Monaco.
Her husband died in 1795, and in 1798 she married Louis Joseph de Bourbon, Prince de Condé.
Honoré III, Prince of Monaco
Honoré III (10 November 1720 – 21 March 1795) ruled as Prince of Monaco and was Duke of Valentinois from 1731 to 1793.
Honoré was the son of Louise Hippolyte, Princess of Monaco, and her husband, Prince Jacques I.
Honoré V, Prince of Monaco
Honoré V( 13 May/ 14 May 1778, in Paris – 2 October 1841, in Paris) was Prince of Monaco and Duke of Valentinois.
He was born Honoré Gabriel Grimaldi, the first son of Honoré IV of Monaco and Louise d'Aumont.
Pierre-Augustin Lefèvre de Marcouville
Pierre- Augustin Lefèvre de Marcouville, called Marcouville,( 28 October 1723 – 1790) was an 18th- century French lawyer and playwright.
A lawyer in Parlement, he was secretary to Honoré III, Prince of Monaco and wrote a dozen opéras comiques, alone or in collaboration.
Antoinette de Mérode
Antoinette de Merode (Antoinette Ghislaine; 28 September 1828 – 10 February 1864), was the Princess of Monaco by marriage to Charles III, Prince of Monaco.
Jacques I, Prince of Monaco
Jacques Goÿon de Matignon (Jacques François Léonor; 21 November 1689 – 23 April 1751) was Count of Thorigny, Prince of Monaco as Jacques I, and the fourth Duke of Valentinois from 1731 until 1733.
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.
Her served as regent of Monaco on behalf of his brother in 1814- 1815.
Chevalier de Grimaldi
Antoine Grimaldi, le Chevalier [de] Grimaldi, (Paris, 2 October 1697 – Monaco, 28 November 1784) was the de facto ruler of Monaco between 1732 and 1784.
An illegitimate son of Antonio I of Monaco and the dancer Élisabeth Dufort (named "Babé"), he was recognized by his father in 1715.
The Chevalier de Grimaldi became governor-general of Monaco on 20 May 1732, when his brother-in-law Jacques I, Prince of Monaco and his young nephew Honoré III, Prince of Monaco moved to Hôtel Matignon in Paris and remained there, even after the proclamation in 1734 of Honoré as Prince of Monaco.
This situation remained the same for half a century until Antoine's death in 1784, when Honoré III was already 64 years old.
Antoine Grimaldi was an able regent.
For example, he succeeded in keeping Monaco out of the War of the Austrian Succession (1740–1748).
He never married and died on 28 November 1784.
His remains were moved in 1966 to the Apse of the Monaco Cathedral.

Question: What is the date of death of Honoré Iii, Prince Of Monaco's father?
Answer: 23 April 1751