Willis Coe was born in 1873. He was the son of Alpheus Coe and Henrietta Dollison. In 1880, Willis was residing with his parents and siblings in Dodge, Boon County, Iowa. 
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↑ "United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MDKR-96D : 17 August 2017), Willis Coe in household of Alpheus B Coe, Dodge, Boone, Iowa, United States; citing enumeration district ED 2, sheet 33C, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0328; FHL microfilm 1,254,328.