Fact: Residence (1875) Camp Lake, Swift, Minnesota
Kristoffer married Bergette Hangen.
"Minnesota State Census, 1875," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MKNY-Q23 : 30 July 2017), Kristoffer C Flatin in household of Tosten C Flatin, Camp Lake, Swift, Minnesota; citing p. 738, line 29, volume Steele, St Louis, Stevens and Swift County, State Library and Records Service, St.Paul; FHL microfilm 0565728.
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MZ9R-Z74 : 26 August 2017), Christopher Flatten in household of Tosten Flatten, Camp Lake, Swift, Minnesota, United States; citing enumeration district ED 27, sheet 220D, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0635; FHL microfilm 1,254,635.
"Minnesota, County Marriages, 1860-1949," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X2BY-DLF : 11 March 2018), Kristoffer O Flaten and Bergette Karoline Hangen, 31 Dec 1899, Goodhue, Minnesota, United States; citing p. 125, local historical societies and universities, Minnesota; FHL microfilm 1,379,161.