↑ Harlan, Alpheus H. The History and Genealogy of the Harlan Family: and particularly the descendants of George and Michael Harlan who settled in Chester Co., Pa., 1687. Baltimore, MD: The Lord Baltimore Press, 1914. Page 286. (Available on-line here.)
↑ "United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MX7M-XXG : 12 April 2016), Sydney Harlin in household of Samuel Harlin, Gasper, Preble, Ohio, United States; citing family 516, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
↑ Harlan, Alpheus H. The History and Genealogy of the Harlan Family: and particularly the descendants of George and Michael Harlan who settled in Chester Co., Pa., 1687. Baltimore, MD: The Lord Baltimore Press, 1914. Page 286. (Available on-line here.)
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