Caroline, Princess of Hanover Caroline, Princess of Hanover Caroline, Princess of Hanover (Caroline Louise Marguerite Grimaldi; born 23 January 1957), is the eldest child of Rainier III, Prince of Monaco, and the American actress Grace Kelly. She is the elder sister of Prince Albert II and Princess Stéphanie. Until the births of her niece and nephew, Princess Gabriella and Prince Jacques, in December 2014 she had been heir presumptive to the throne of Monaco since 2005, a position which she previously held from 1957 to 1958. Caroline is married to Ernst August, Prince of Hanover (born 1954), the heir to the former throne of
Rainier III, Prince of Monaco with the French film actress Gisèle Pascal, whom he had met while a student at Montpellier University, and the couple lived at Saint-Jean-Cap-Ferrat. Rainier's sister, Princess Antoinette, wishing her own son to ascend the throne, spread rumours that Pascal was infertile. The rumours combined with a snobbery over Pascal's family origins ultimately ended the relationship. Rainier became the Sovereign Prince of Monaco on the death of Louis II on 9 May 1949. After ascending the throne, Rainier worked assiduously to recoup Monaco's lustre, which had become tarnished through neglect (especially financial) and scandal (his mother, Princess Charlotte, took a noted