Peter, Duke of Coimbra
On 13 September 1428 at Alcolea del Cinca she married Infante Peter, Duke of Coimbra (9 December 1392 – 20 May 1449 at the Battle of Alfarrobeira), a younger son of John I of Portugal. During her husband's regency for his nephew, Afonso V of Portugal, the marriage of the couple's daughter Isabella to the King was arranged.