Infanta Catherine of Portugal, Duchess of Braganza by marriage (Portuguese: Catarina; 18 January 1540 – 15 November 1614) was a Portuguese infanta (princess) claimant to the throne following the death of King Henry of Portugal in 1580.
She was the second daughter of Edward, Duke of Guimarães (sixth son of Manuel I of Portugal) and Isabel of Braganza. She was married to John I, Duke of Braganza, a descendant of earlier Portuguese monarchs, and head of the most important aristocratic House in Portugal.
João I of Braganza
1543–1583 (m. 1563)
Maria of Guimarães