The first person to swear fealty to Matilda was Stephen of Blois who was the son of Adela of Normandy , the daughter of William the Conqueror .
Head entity: stephen of blois Q60849 9 10 11
Tail entity: adela of normandy Q237886 17 18 19
Relation (head \u2192 tail): P25
Inverse relation (tail \u2192 head): P40