Torsten Andersen is in the 1801 census at Strøm.
http://digitalarkivet.uib.no/cgi-win/webcens.exe?slag=visbas...Kirsti Knutsdatter is in the same census at a tennant farm to Hunder
http://digitalarkivet.uib.no/cgi-win/webcens.exe?slag=visbas...They lived as tennant farmers at Prestlien. Tosten borne in 1789 died Oct. 8, 1849 and buried Oct. 15. Kirsti borne 1796, died Apr. 26, 1853 and buried May 4.
Anscestors to these two are found at
www.kaldor.no.
For Tosten, look for Anders Houg, borne 1748, in the database. It would be Gjertrud Grimsrud who is the mother.
For Kiersti, look for Kiersti Midtskogen, borne Nov. 9, 1796.