I work it out as the following:
1. Jonas Mathisen b. c1770 Sor-Odal, Hedmark, Norway
+ Elie Olsdatter b. c1758
2. Haagen Jonasen b. c1790 Sor-Odal, Hedmark, Norway
+ Anne Johansdatter
3. Johan Haagensen b.1817 Sor-Odal, Hedmark, Norway
+ Maren Gurine Hermansdatter b.1817 Forstaden, ?Fredrikstadt, Norway.
So Jonas is the father of Haagen as the paternal naming system implies. So presumably the first name of the father of Jonas would be a 'Mathis' or similar.