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
John B. Kelly Jr. 1929) and Elizabeth Anne (born June 1933 and nicknamed "Lizanne"). Kelly's younger sister Grace would go on to become an Academy Award winning film actress who married Rainier III, Prince of Monaco in 1956. Kelly's nephew is Monaco's current monarch Prince Albert II. The children were raised in a 17-room house on Henry Avenue in East Falls, Philadelphia Kelly served in the United States Navy during World War II. He was stationed in Bainbridge, Maryland. Kelly graduated from the University of Pennsylvania in 1950 and rowed for the varsity team. Kelly represented the United States at the 1948 Summer Olympics