During her early years , one potential husband for Catherine was John , Prince of Asturias , eldest son of Ferdinand II of Aragon and Isabella I of Castile .
Head entity: ferdinand ii of aragon Q12860 20 21 22 23
Tail entity: john, prince of asturias Q381871 11 12 13 14 15
Relation (head \u2192 tail): P40
Inverse relation (tail \u2192 head): P22