Maria Callas was born in New York City in 1923. She made her professional debut with the Royal Opera of Athens in Boccaccio, and soon won her first major role with Tosca. Eventually garnering international acclaim, Callas made her Italian opera debut at the Verona Arena in 1947, later followed by her 1954 American debut in Norma. During the 1960s, the quality and frequency of her performances waned. On September 16, 1977, Callas died in Paris of a heart attack.
Aristotle Onassis was a Greek entrepreneur born on January 15, 1906, in Smyrna, a town in present-day Turkey. In the 1920s, Onassis launched his own cigarette brand. Shortly thereafter he realized that tobacco shipping generated more revenue, and went into the cargo ship business. The shipping tycoon dated many famous women, including the widowed Jacqueline Kennedy, whom he married in 1968.