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NASSAU, BAHAMAS - MARCH 14: Princess Margaret, the younger sister of Britain's Queen Elizabeth II, walks 14 March 1967 with her husband Earl of Snowdon on a pontoon in the Bahamas. Princess Margaret and the Earl of Snowdon had two children, son Linley and daughter Sarah, but announced their separation in March 1976. When the marriage was officially ended two years later, Margaret became the first royal to divorce since Henry VIII in the 16th century. (Photo credit should read DALMAS/AFP/Getty Images)

NASSAU, BAHAMAS - MARCH 14:  Princess Margaret, the younger sister of Britain's Queen Elizabeth II, walks 14 March 1967 with her husband Earl of Snowdon on a pontoon in the Bahamas. Princess Margaret and the Earl of Snowdon had two children, son Linley and daughter Sarah, but announced their separation in March 1976. When the marriage was officially ended two years later, Margaret became the first royal to divorce since Henry VIII in the 16th century.  (Photo credit should read DALMAS/AFP/Getty Images)