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
Honoré II, Prince of Monaco allowed the country to be occupied by Spanish troops in 1605. The inhabitants of Monaco were prohibited to carry arms and the Prince and his two sisters were moved to Milan. The "Council of Monaco" tried to limit Spanish power but the occupation lasted until 1614, and a strong Spanish influence remained until 1633, when it recognized Honoré as a sovereign prince. From adulthood, Honoré started to criticize Spain and turned to France for support. Louis XIII gave him the support he needed and this resulted in the Treaty of Péronne. This ended Spanish rule and put Monaco under French