Ingebørg was the daughter of Svein Halvorssen Arnevik and Sara Ingebritsdatter. She was baptized 24 September 1752 at Finnås, Hordaland, Norway, the daughter of Svein Arnevik and Sara Engebrictsdatter.
She was engaged to be married to Knut Knutssen on 14 May 1781 at Fjelberg; their sponsors were Knut's father, Knut Sjoangen and Per Northus. She and Knut married on 24 June 1781.
They were the parents of four children: Sara (1781); Ingebørg (1788); Mette (1793); and Brynhild (1796-1857).
Ingebørg died 7 January 1731 at the age of 78.