was Mirta Díaz-Balart, whom he married in October 1948. She is the only spouse of Castro acknowledged by the Cuban government. Diaz-Balart, the daughter of a powerful Cuban politician and brother of Batista's Minister of Interior, was a student at the University of Havana where she met and married Castro. She divorced him later in 1955 while he was in prison due to the attacks on the Moncada Barracks. They had one son: Fidel Ángel "Fidelito" Castro Díaz-Balart, born in September 1949. Fidelito grew up at various times between Havana and Miami; he later went to the Soviet Union to study Nuclear Physics. For a time, he ran Cuba's atomic-energy commission before being removed from the post by his father. He took his own life in February 2018, over a year after his father's death. During his first marriage, Castro had a brief encounter with Maria Laborde, an admirer from Camaguey whom very little is known and has long been deceased. They had one son: Jorge Ángel Castro, born on 23 March 1949. It was long believed that his birth was in 1956, but Sánchez and another defector uncovered that he was in fact born earlier than Fidelito. While Castro was married to Mirta, he had an affair with Natalia "Naty" Revuelta Clews. Widely regarded in Havana for her beauty, Natalia herself was married to Dr. Orlando Fernandez but sympathized with the aims of the Revolutionary movement. She initially joined the movement as a friend of Castro but later became his mistress and visited him while he was imprisoned on Isla de Pinos. She would give birth to his daughter: Alina Fernández Revuelta, born in 1956, is Castro's only daughter. She did not know her true parentage until she was 10. Castro showed little interest in her but sent her to a boarding school in Saint-Germain-en-Laye, France. One of the few people willing to stand up to Castro, several defectors have described her personality as the most similar to her father. Alina became a public relations director for a State-owned fashion company and a model for Havana Club. Her father inadvertently found out about the latter job while reading Cuba magazine, coming across an advertisement showing Alina posing in a bikini on a boat with two other models; he nearly exploded with rage. Alina left Cuba in 1993, disguised as a Spanish tourist, and sought asylum in the US, from