Parents, 1 sibling and wife are attached to the memorial page on Find A Grave for Edward.
Sources
↑1880 Census:
"United States Census, 1880"
citing Volume: 1; Affiliate Name: The U.S. National Archives and Records Administration (NARA); Affiliate Publication Number: T9; Affiliate Line Number: 00043; Digital film/folder number: 005160613; FHL microfilm: 1254351; Image number: 564; Sheet number: 280; Sheet letter: A; Indexing batch: C55758-6
FamilySearch Record: MD21-9X4 (accessed 3 April 2024)
FamilySearch Image: 33S7-9YBD-965
Edward Cook (22), single son, Farmer, in household of Lucy Cook (52) in Marion, Linn, Iowa, United States. Born in Iowa, United States.
↑ Census, 1880,: Marion, Linn, Iowa, United States, Household Identifier: 7859619, Person Number: 1, Sheet Letter: A, Sheet Number: 280, Volume: 1, Affiliate Publication Number: T9, Affiliate Name: The U.S. National Archives and Records Administration (NARA), Digital Folder Number: 005160613, Microfilm Number: 1254351, Image Number: 564, Indexing Batch: C55758-6. Citing this Record: "United States Census, 1880", Marion, Linn, Iowa, United States, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MD21-9XW : Fri Mar 08 01:47:29 UTC 2024), Entry for Lucy Cook and Edward Cook, 1880.