Maria of Portugal, Hereditary Princess of Parma

Letter signed (with her monogram 'M'), written in secretarial hand, addressed to her husband Alessandro Farnese, apologising for not writing in person due to a terrible headache and expressing concerns on the situation of Countess Lucrezia Confalonieri of Canossa, one page, address leaf, remnants of wax seal, 4to, 6 October 1569; with another letter signed with her monogram, possibly addressed to her husband, still regarding the Countess of Canossa, one page, remnants of wax seal, 4to, 24 April 1573 (2)

***Infanta Maria of Guimarães (12 August 1538 – 9 July 1577) was the 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.