John I of Portugal King of Portugal from 1385 to 1433 (1357–1433) Parents Teresa Lourenço Peter I of Portugal Children Ferdinand the Holy Prince Blanca de Aviz Afonso de Portugal Peter, Duke of Coimbra Prince Henry the Navigator Afonso I Isabella of Portugal, Duchess of Burgundy Beatrice, Countess of Arundel John, Constable of Portugal Edward I of Portugal Siblings Infante Afonso Beatrice, Countess of Alburquerque Louis of Portugal Infanta Maria of Portugal Maria, Marchioness of Tortosa Infante Dinís, Lord of Cifuentes Infante João, Duke of Valencia de Campos Ferdinand I of Portugal Partners Inês Pires Philippa of Lancaster
