Premise: Caroline , Princess of Hanover ( Caroline Louise Marguerite ; born 23 January 1957 ) , is the eldest child of Rainier III , Prince of Monaco , and American actress Grace Kelly . She is the elder sister of Prince Albert II and Princess Stéphanie . Caroline is married to Ernst August , Prince of Hanover ( born 1954 ) , the heir to the former throne of the Kingdom of Hanover , as well as the heir male of George III of the United Kingdom .
Hypothesis: Caroline, Princess of Hanover is married to the heir of George III of the United Kingdom and she is royalty.
Label: ENTAILMENT