↑ "Iowa, County Marriages, 1838-1934," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/XJDG-QQ6 : accessed 5 March 2015), Albert Heinrich Tigges and Christina Dorothea Plagmann, 23 Dec 1908; citing Brooke, Buena Vista, Iowa, United States, county courthouses, Iowa.
"Iowa State Census, 1895," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/VTSV-TB3 : accessed 5 March 2015), Christine Plagman in household of William Plagman, Buena Vista, Iowa, United States; citing p. 48, 1895, State Historical Society, Des Moines; FHL microfilm 1,020,335.
"United States Census, 1900," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M923-SCR : accessed 5 March 2015), Tena Plagman in household of Wm Plagman, Brooke & Elk Townships, Buena Vista, Iowa, United States; citing sheet 4B, family 64, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,240,419.
"Iowa, State Census, 1905," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/QVMP-YBDP : accessed 5 March 2015), Tena Plagman, 1905; citing Census, Buena Vista, Iowa, United States, card 343, State Historical Department, Des Moines; FHL film 1,430,300.
Plagman, Alice Augusta, "The Families of Plagemann-Plagmann-Plagman: In Particular the Ancestry and Descendents of Joachim and Elizabeth Schulz Plagemann; with Historical Notes", 1967. Jayme Arrington has a copy of it and will scan a page on request.
It may be possible to confirm family relationships with Christine by comparing test results with other carriers of her mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Christine: