Marie (Marit) Olsdotter

Born Nov 17 the year is uncertain. Father was Ole Pedersen and they were from the Lomb/Lom. She married a Jakob Amundsen of Strand of Sjåger now Sjå k on Sept 18, 1865 I think. This is as much as I know. I would like to know more about who her mother wasw and her ancesters. I hope someone can help. Many thanks