Peter I of Portugal King of Portugal from 1357 to 1367 (1320–1367) Parents Beatrice of Castile Afonso IV of Portugal Children Beatrice, Countess of Alburquerque Infante Dinís, Lord of Cifuentes Ferdinand I of Portugal Maria, Marchioness of Tortosa Infante João, Duke of Valencia de Campos John I of Portugal Infanta Maria of Portugal Louis of Portugal Infante Afonso Siblings Maria of Portugal Eleanor of Portugal Isabel of Portugal Maria Afonso de Borgoña, Bâtarde de Portugal Partners Teresa Lourenço Constanza Manuel Inês de Castro Blanche of Castile, Infanta of Portugal