Sources

1 Ulf Grøndahl, Gårdshistorie for Askim (Bind 2) (Utgitt av Askim kommune, Askim, 1987.), p. 157.

2 The Digitalarkivet Census for Norway, http://digitalarkivet.no/cgi-win/WebFront.exe?slag=vis&tekst=meldingar&spraak=e (A joint project between The National Archives of Norway, The regional Archive of Bergen and The Department of History, University of Bergen.), The 1801 census for the Grøtvedt Søndre farm in Askim.