Note 97 — Chapter IV · Kenneth the Second—971–995.
Reading edition
They were the sons of a female slave. The surviving legitimate sons of Rognwald were Thorer, who succeeded his father in Norway, and the famous Gangr Rolf, founder of the Norman dynasty, and ancestor of William the Conqueror. The Holder was the old Allodial proprietor amongst the Scandinavians of those days, answering to the Eorlcundman.