Albert II, Prince of Monaco shortened title is "His Serene Highness Albert II, Sovereign Prince of Monaco"; this does not include the many other styles claimed by the Grimaldi family. Albert II, Prince of Monaco Albert II (Albert Alexandre Louis Pierre Grimaldi; born 14 March 1958) is the reigning monarch of the Principality of Monaco and head of the princely house of Grimaldi. He is the son of Prince Rainier III and the American actress Grace Kelly. Prince Albert's sisters are Caroline, Princess of Hanover, and Princess Stéphanie. In July 2011, Prince Albert married Charlene Wittstock. Prince Albert II is one of the wealthiest royals
Honoré IV, Prince of Monaco Honoré IV married Louise Félicité Victoire d'Aumont, Duchess of Aumont, Duchess Mazarin and of La Meilleraye on 15 July 1777 in Paris. They divorced in 1798. They had two sons: During the French occupation of Monaco, Honoré IV was imprisoned for several years. Illnesses resulting from this imprisonment incapacitated Honoré IV in his later years, and following the re-establishment of the Principality a regency was established to rule in Honoré's name. This regency was directed, first, by his brother Joseph Grimaldi, then from 1815 by his son, the Hereditary Prince Honoré who succeeded him in 1819 as Sovereign Prince Honoré