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Rainier III, Prince of Monaco

Rainier III (Rainier Louis Henri Maxence Bertrand Grimaldi;[1] 31 May 1923 – 6 April 2005) was Prince of Monaco from 1949 to his death in 2005. Rainier ruled the Principality of Monaco for almost 56 years.

"Prince Rainier" redirects here. For the Hungarian nobleman, see Prince Rainer of Saxe-Coburg and Gotha.

Rainier III

9 May 1949 – 6 April 2005

Albert (2005)

(1923-05-31)31 May 1923
Prince's Palace of Monaco, Monaco

6 April 2005(2005-04-06) (aged 81)
Cardiothoracic Centre of Monaco, Monaco

15 April 2005

(m. 1956; died 1982)

Rainier III's signature

Rainier was born at the Prince's Palace of Monaco, the only son of Hereditary Princess Charlotte and Prince Pierre. During his reign, he was responsible for the transformation of Monaco's economy, shifting from its traditional casino gambling base to its current status as a tax haven and cultural destination. The Prince also coordinated the substantial reforms of Monaco's constitution, which limited the powers of sovereign rule.


Rainier married American film star Grace Kelly in 1956, which generated global media attention. They had three children: Caroline, Albert and Stéphanie. Rainier died in April 2005 from complications relating to a lung infection as a result of frequent smoking; he was succeeded by his son, Albert II.

Early life[edit]

Rainier was born at Prince's Palace in Monaco, the first native-born prince since Honoré IV in 1758. Rainier's mother, Charlotte, was the only child of Louis II, Prince of Monaco, and his lover, Marie Juliette Louvet; she was legitimised through formal adoption and subsequently named heiress presumptive to the throne of Monaco. Rainier's father, Count Pierre of Polignac, who was half-French and half-Mexican, adopted his wife's dynasty, Grimaldi, upon marriage and was made a Prince of Monaco by his father-in-law. Rainier had an older sister, Princess Antoinette, Baroness of Massy.[2] His parents divorced in 1933.


Rainier's early education was conducted in England, at the public schools of Summerfields in St Leonards-on-Sea, Sussex, and after 1935[3] at Stowe School, in Buckinghamshire. Rainier then attended the Institut Le Rosey in Rolle and Gstaad, Switzerland from 1939, before continuing to the University of Montpellier in France, where he obtained a Bachelor of Arts degree in 1943, before studying at Sciences Po Paris in Paris.[2]


In 1944, the day before his 21st birthday, Rainier's mother renounced her right to the Monegasque throne and Rainier became Prince Louis's direct heir. In World War II, Rainier joined the Free French Army in September 1944, and served under General Joseph de Goislard de Monsabert as a second lieutenant. As soldier, he witnessed action during the German counter-offensive in Alsace. Rainier received the French Croix de Guerre with bronze star (representing a brigade level citation) and was given the rank of Legion of Honor in 1947. Following his decommission from the French Army, he was promoted by the French government as a captain in April 1949 and a colonel in December 1954.[2]


Rainier became the Sovereign Prince of Monaco upon the death of his grandfather, Prince Louis II, on 9 May 1949, at the age of 25.[2]

France: Grand Cross of the [26]

Order of the Legion of Honour

Iran : Recipient of the Commemorative Medal of the 2,500-year Celebration of the Persian Empire[27]

Iranian Imperial Family

Italy: Grand Cross with Collar of the [28]

Order of Merit of the Italian Republic

Sovereign Military Order of Malta: Knight Grand Cross with Collar of the

Order of Merit

Portugal: Grand Cross with Collar of the [29]

Military Order of Saint James of the Sword

Republic of San Marino: Grand Cross of the Equestrian Order of [26]

Saint-Marin

Prince Rainier Day

Prince's Palace, Monaco, official website

Cardinal Ratzinger sends condolences to Monaco on Prince Rainier's death

The Monte Carlo Royal Palace – 360 degree QTVR

– Daily Telegraph obituary

Prince Rainier III of Monaco