Gertrude Coers Vonderheide was the daughter of Frieke Coers andBauka Daniels. According to the 1900 Census in Orvil Township Emden vill. & Harstburg, Logan, Illinois, United States, she was born in Feb. 1891 in Illinois.
↑ "United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MS47-XNM : accessed 30 September 2017), Gertrude Coers in household of Fred Coers, Orvil Township Emden vill. & Harstburg, Logan, Illinois, United States; citing enumeration district (ED) 38, sheet 9B, family 155, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,320.