1. Hjalmar Nilson Grimstad, b. 1905 in Grimstad, Lindaas d.1986
2. Nils Gullakssen, b. 1865 in Grimstad , Lindaas; d. 1938
3. Hennrika Mary Hansdatter, b. 1872 in Knarvik, Lindaas; d. 1956.
4. Gullak Haldorsen, b. 1832 in Seim Hosanger; d. 1922
5. Kristi Eiriksdatter, b. 1831 in Spurkeland Hosanger; d. 1928.
6. Hans Trulssen Knarvik, b. 1836 in Knarvik, Lindaas; d. 1918.
7.Kari Hansdatter, b. 1840 in Ravnberg. D. ?
3rd Generation Great Grandparents
9. Marta Ivarsdatter b. 1792 in Ikeland, Hosanger; d. 1877.
11. Martha Nilsdatter, b. 1806 in Synnevaag, Nese; d. 1883.
13. Anna Birgithe Jacobsdatter, b. 1811 in Grimstad , Lindaas; d.?
4th Generation Great Grandparents
16. Johannes Haldorsen b. 1760 in Dalseid, d. 1828 marrried 1787
17. Marta Olsdatter b. 1763 Furnes, Bruvik d. 1841
18. Ivar Gudmundson b. 1752 in Vallestrand, d. 1838 married 1782
19. Marta Andersdatter b. 1757 in Reystad d. 1843
21. Agothe Andersdatter b. 1763 in Sjauset d. 1842 (2nd wife)
22. Nils Olson b. 1774 in Nese
23. Kristi Villunsdatter d. 1773 in Sletten, Lindaas d. 1818
24. Hans Trulsen b. 1767 d. ? married in 1801
25. Martha Hansdatter b. 1783 in Fielddanger, Lindaas
26. Jacob Olsen b. 1765 d. ? married 1796
27. Anna Larsdatter b. 1771
The families living on these farms were not necessarily related by blood, though in modern times (post 19th century) they may have shared a common last name. Hence, if you were born on "Seim" farm and immigrated to America, your last name may be "Seim," not Johansson or Johansdatter (son/daughter of Johan).
The cooperative farm was a way of life in rural Norway for centuries. Bygdeboks, or farm histories, were written in the 19th & 20th centuries to chronicle farm histories and genealogies. Needless to say, it is very valuable for a family historian to find the Bygdebok for the region he/she is researching.
The Digital Archives of Norway is an excellent source for research.