Infanta Maria of Guimarães (12 August 1538 – 9 July 1577) was a Portuguese infanta, daughter of Infante Duarte, Duke of Guimarães (son of King Manuel I of Portugal), and Isabel of Braganza. She married Alessandro Farnese, Duke of Parma and Piacenza on 11 November 1565. She was Hereditary Princess of Parma by marriage. Issue Ancestry 1538 births 1577 deaths Portuguese infantas Hereditary Princesses of Parma House of Aviz People from Lisbon House of Farnese Burials at the Sanctuary of Santa Maria della Steccata 16th-century Portuguese people