After looking a bit more, I'll hazard a guess that Torsten Helgenson Nesja uses the name Thomas Helgeson in the USA.
from the Wisconsin index of marriages: MARRIAGE Groom: Horston H Helgeson <---- Bride: Siri Mary S Sohmes Marriage Date: 14 May 1879 County: Manitowoc Volume: 02 Page: 0483
It's possible Siri might go by the name Sarah or Susan.
I think one of the brothers Ole is an Engebret.
Ingrid Helgeson Engebret Helgeson Knute Helgeson Torsten/Thomas Helgeson Ole Helgeson Kari/Caroline
Sigri Olsdtr Ulven (or Ulvena)born 1814 in Vestre Slidre, Norway died 02 Feb 1902 DePere, Glenmore Twp, Brown County, Wisconsin married 15 June 1857 to Helge Knudson Nesja born 16 Jun 1816 in Vestre Slidre Norway (aka Holji Knutson Nesja) died 31 Dec 1882 in DePere, Glenmore Township, Brown County, Wisconsin
Ingri Helgesdtr Nesja born 12 Oct 1845 married Christopher Evenson and lived in Cato, Manitowoc, Wisconsin
Kari Helgesdatter Nesja born 13 Sep 1837 in Norway died 25 Dec 1910 in Cato, Manitowoc, Wisconsin, USA married Ole Knudsen Berge (1840-1919)