Sigrid Undset noted that Olaf was baptised in Rouen, the capital of Normandy, and suggested that Olaf may have used priests of Norman descent for his missionaries.
Sigrid Undset mencatat bahwa Olaf dibaptis di Rouen, ibukota Normandie, dan menyarankan agar Olaf menggunakan pendeta keturunan Norman untuk misionarisnya.