Ingebjorg grandfather 's mother , Isrid Gudbrandsdatter , was the daughter of Gudbrand Kula from Oppland and sister of Åsta Gudbrandsdatter , who was the mother of Kings Olaf II and Harald Hardrada .
Head entity: harald hardrada Q203647 31 32
Tail entity: åsta gudbrandsdatter Q2543933 19 20
Relation (head \u2192 tail): P25
Inverse relation (tail \u2192 head): P40