Marcillus was born in 1796. He passed away in 1859.
Sources
"United States Census, 1850," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:M4H8-L6T : 22 December 2020), M F C Fitch, Wayne Township, Erie, Pennsylvania, United States; citing family , NARA microfilm publication (Washington, D.C.: National Archives and Records Administration, n.d.).
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