Who was the father of john of castile, lord of valencia de campos?
Who was the father of John of Castile, Lord of Valencia de Campos?
SELECT DISTINCT ?d WHERE { ?d property:P40 resource:Q926544 }
SELECT DISTINCT ?d WHERE { ?d property:child resource:John_of_Castile,_Lord_of_Valencia_de_Campos }
Alfonso X of Castile