Pedro Alfonso de Castilla Castillian noble (1345-1359); illegitimate son of Alfonso XI of Castile (1345–1359) Parents Eleanor de Guzmán Alfonso XI of Castile and Leon Children Siblings Juan Alfonso de Castilla Juana Alfonso de Castilla Peter of Castile Fadrique Alfonso, Lord of Haro Fernando Alfonso de Castilla Henry II of Castile Sancho Alfonso de Castilla Sancho Alfonso, 1st Count of Alburquerque Pedro de Aguilar Tello de Castilla, Lord of Aguilar de Campoo