Origins of Even Jonson

Can someone help me with my "brick wall?" I first locate my gggrandfather, Even Jonson, as a member of the Tinnsjo Kompani in 1797. His age is stated as 27 and he has been in service for 3 1/4 years. He is unmarried. He married Kirsti Eriksdatter Brukaas in Heddal in 1795. They had a daughter in Ramnes, Vestfold in 1797. The couple ilved on Timmermoen under Landsverk in Sauland, Hjartdal parish in 1801. His age is listed as 30. He is a husmann The first wife and two daughters die. He married Thone Torguisdatter Hauglien and had numerous children. They lived on Mourbrekke and Bruebakken in Sauland. Even died Nov 15, 1857, age 95 (!). Since his first child is Gunhild, I think his parents may have been a John and Gunhild. John Olson and Gunhild Olsdatter Bernaas have a child, Even, born on Nov. 18, 1764 in Tinn. I find no further references to them and do not locate "my" Even until he appears with Tinnsjo Kompani. I understand Kåarto's ancestor was a colonel in Tinnsjo Kompani at that time. Does he have more information about it? A couple other grandfathers served in that unit also, I believe. Any help I can receive will be greatly appreciated! Marlys Nelson