From Wikipedia.com
Princess Antoinette, Baroness of Massy
Princess Antoinette, Baroness of Massy (born Antoinette Louise Alberte Suzanne Grimaldi) (b. 28 December 1920) is a member of the princely family of Monaco and the elder sister of the late Prince Rainier III. Her parents were Count Pierre de Polignac and Princess Charlotte, Duchess of Valentinois.
Three children were born to Princess Antoinette and her lover Alexandre-Athenase Noghès, a Monegasque-born International tennis champion: Elisabeth-Anne] (born 1947), Christian Louis, (born 1949), and Christine Alix 1951–1989). The parents subsequently married in Genoa on December 4, 1951 and divorced in 1954. The children were named Grimaldi at birth but by an ordinance of November 15, 1951 their names were changed to de Massy.
Her second husband, Jean-Charles Rey, a writer, was married to her from 1961 to 1973.
Her third husband was John Gilpin, a renowned British ballet dancer, whom she married on July 28, 1983. He died the following September.
Princess Antoinette is known to be somewhat eccentric, even having been described as "completely mad" by her servants and she lives down the coast from Monaco at Èze with a large collection of dogs and cats.
Even though she was Heiress Presumptive between 1949 and 1957, Princess Antoinette and her descendants lost their place in the line of succession to the Monegasque Throne, which they acquired in 2002 with the reform of the succession rules, with the death of Rainier III.
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