Maria Anna of Spain Wife of Holy Roman Emperor Ferdinand III (1606-1646) (1606–1646) Parents Margaret of Austria, Queen of Spain Philip III of Spain Children Marie von Habsburg Ferdinand IV, King of the Romans Maximilian Thomas Erzherzog von Österreich Leopold I, Holy Roman Emperor Mariana of Austria Philip August von Habsburg Siblings Infanta Margarita of Spain Infante Alonso of Austria Infante Carlos of Spain Infanta Maria of Austria Philip IV of Spain Anne of Austria Cardinal-Infante Ferdinand of Austria Partners Ferdinand III, Holy Roman Emperor