Johan’s genealogical study

Hello, I’ve had many unresolved mysteries and brick walls in certain people that form part of my Norwegian ancestry. I’ll get right to the point; I need help finding the parents of certain people or more information about them. PEOPLE: • An ancestor of mine is named Laurine Martine Gundersdatter. She was born on the 25th of November of 1822, in Oslo, and baptized in January of 1823. She married Ole Nielsen Øhrn (1820-1902) in 1844, in Oslo. Her father was named Gunder Olsen Hernæs and I think that he was born in 1798. Her mother was named Berthe Cecilie Olsdatter and I think that she was born in 1793. Laurine’s parents got married in 1822 in Oslo. The problem is that I can’t find when and where Laurine’s parents were born and who their parents were. • Ole Nielsen Øhrn, Laurine’s husband, was born on 7th January of 1820, in Kongsberg, and baptized in June of that year. His father was named Niels Olsen Øhrn (1788-1830). I have no problem with his side of the family. Ole’s mother was named Karen Lovise Eliasdatter (sometimes Nilsdr Eliasen). The problem is that I can’t find when and where she was born and who her parents were. Thank you to anyone who at least stops by for some advice or some well-needed help.