1936, Margaret's father became king, her sister became the presumed heir to the throne, and she immediately became the second heir to the throne. During World War II, Margaret and her sister stayed at Windsor Castle to continue their education. After the war, Margaret fell in love with Colonel Peter Townsend. 1952, Margaret's father died, her sister succeeded to the throne, and Thomson divorced his first wife. Margaret married Anthony Armstrong Jones on 1960. The couple have a son and a daughter. 1978, the two divorced. Margaret is also the chairman or honorary chairman of more than 80 organizations, which are involved in the fields of child welfare, medical care, music and art 1 966 March1Day. Princess Margaret visited Hong Kong and took Mrs. Mulian to Queen's Pier at Kai Tak Airport. The navy fired 2 1 salute to welcome her. On February 9th, 2002, Princess Margaret died of a heart attack caused by a stroke.