Haagen Josephsen is listed in the 1701 census with an age of 66 (b. 1635):
https://media.digitalarkivet.no/view/38463/58
In the Overview, Mo prestegjelds gårdshistorie, which takes its data from the 1666 census, identifies Haagen Josephsen as Håka Josefsa, age 18 (b. 1648).
There is a 13 year discrepancy.