The free records databases at FamilySearch.org give a great deal of information. Your posting gave no dates - making it impossible to research without those.
https://familysearch.org/ark:/61903/1:1:N713-2Y6and
https://familysearch.org/ark:/61903/1:1:NWQM-45BSo - 'Syver Löken' was born about 1877 in Askim, Norway. (Askim is a district in Østfold, Norway, fairly close to Oslo.) His father's name is given as 'Martin Zypriansen Löken'.
The parish records for Askim in 1877 are digitized and online at the Digitalarkivet website. Syver's birth/baptismal record is included and shows that he was born 13 Feb 1877 to Martin Zypriansen and Helene Syversdatter.
http://www.arkivverket.no/URN:kb_read?idx_kildeid=5753&i...Syver's parents are still in Askim for the 1900 Norwegian census -
http://www.rhd.uit.no/folketellinger/ftliste_e.aspx?ft=1900&...Gudrun and the two girls sailed from Oslo/Kristiania in 1905 -
http://gda.arkivverket.no/cgi-win/webcens.exe?slag=visbase&a...