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
Constitution of Monaco Constitution of Monaco The Constitution of Monaco, first adopted in 1911 after the Monégasque Revolution and heavily revised by Prince Rainier III on December 17, 1962, outlines three branches of government, including several administrative offices and a number of councils, who share advisory and legislative power with the Prince. The constitution also defines the line of succession to the Monegasque throne; this section was modified on April 2, 2002. By word count, it is the shortest constitution in the world currently in force. The Prince retains the highest executive power, but the principality's head of government is the Minister of