About Astrid of Sweden
Princess Astrid of Sweden (Astrid Sofia Lovisa Thyra; 17 November 1905 – 29 August 1935) was a member of the Swedish House of Bernadotte and later became Queen of the Belgians as the first wife of King Leopold III. Following her marriage to Leopold in November 1926, she assumed the title of Duchess of Brabant. Astrid held the position of Queen of the Belgians from 23 February 1934 until her death in 1935. Known for her charitable efforts, she focused particularly on causes related to women and children. Astrid and Leopold had three children. Their daughter, Joséphine-Charlotte, later became the Grand Duchess Consort of Luxembourg, while their sons both ascended the throne as King of the Belgians. Their son King Albert II named his first daughter, Princess Astrid of Belgium, after his mother. Queen Astrid was the sister of Crown Princess Märtha of Norway (the wife of the future King Olav V).
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.