Hi cousin,
My great-grandmother was Martha Olsdatter Brekke/Brecke. She was the older sister of Jacob. There were 7 kids, Gustav, Andrine Marie, Oluf, Karen Johanne, Martha, Carl and Jacob. Their parents were Ole Gulbrandsen and Boel Regine (Hoff) Olsdatter. I have their parents names as well. They all came from Nedre Eiker, Buskerud. Ole had two other wives, Gunhild Marie Gulbrandsdatter, and Maren Andersdatter. Gunhild had 8 kids: Gunerius, Bolette Regine, Aagot Marie, Gunda Othilie, Anna Mathilde, Hans Georg, Jorgine Kristiane and Ole.
Hope this helps.
Janet