Which opera singer left her husband for Aristotle Onassis, who in turn left her to marry Jacqueline Kennedy?

Maria Callas (1923-1977) was a Greek soprano and one of the most controversial opera singers of the 20th century. She had voice of great range and power, earning her the nickname 'La Divina' (The Divine One).

Callas made her first Italian debut in 'La Gioconda' in 1947. The next year she sang in 'Norma' and then appeared as Elvira in 'I puritani' in Venice, which was her first great success.

In 1958, Callas met the Greek shipping magnate Aristotle Onassis. Their affair led her to divorce from her husband, Giovanni Battista Meneghini. Since Meneghini was also her manager, Callas slowly began to withdraw from the stage. Her final appearance was in 'Tosca' in London in 1965, by which time her voice had considerably weakened.

The relationship with Onassis ended two years later in 1968, when he left Callas for Jacqueline Kennedy. Callas spent her last years living in isolation in Paris and died of a heart attack at age 53 on 16th September 1977.