Margaret of Austria was Queen of Spain and Portugal by her marriage to King Philip III & II. Wikipedia
Born: December 25, 1584, Graz, Austria
Died: October 3, 1611 (age 26 years), San Lorenzo de El Escorial, Spain
Children: Anne of Austria, Maria Anna of Spain, Infante Carlos of Spain, and more
Parents: Maria Anna of Bavaria
Spouse: Philip III of Spain (m. 1599–1611)
Siblings: Ferdinand II, Holy Roman Emperor
Great grandchildren: Margaret Theresa of Spain, Charles II of Spain, Charles VI, Holy Roman Emperor, and more