Frederick was born in 1868. He passed away in 1941.
Sources
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M8M3-HBQ : 13 September 2017), Frederick Mellenbrook in household of Henry Mellenbrook, Olmsted, Cuyahoga, Ohio, United States; citing enumeration district ED 70, sheet 283C, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,255,009.
"Ohio, County Marriages, 1789-2013," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X8GD-7C1 : 26 August 2019), Fred Mellenbrook and Mabel Neal, 28 Nov 1900; citing Marriage, Cuyahoga, Ohio, United States, 237 App 24950, Franklin County Genealogical & Historical Society, Columbus; FHL microfilm.
"Ohio Deaths, 1908-1953," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XZCM-X57 : 15 August 2019), Fred W Mellenbrook, 10 Jun 1941; citing Fairview, Cuyahoga, Ohio, reference fn 40154; FHL microfilm 2,023,918.
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