Nielsen Hayden genealogy
Family: Alexander Johnston McDowell / Mary Sheldon (F12481)
m. 19 Jul 1814
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Male
Alexander Johnston McDowell
Birth 1788 New London Crossroads, Chester, Pennsylvania 
Death 6 Dec 1871 Steubenville, Jefferson, Ohio 
Burial Union Cemetery, Steubenville, Jefferson, Ohio 
Marriage 19 Jul 1814 [1, 2] Jefferson County, Ohio [1, 2] 
Father Dr. John McDowell | F12354 Group Sheet Mother Martha Johnston | F12354 Group Sheet
Female
Mary Sheldon
Birth Hartford, Hartford, Connecticut 
Death 1843 Burial Union Cemetery, Steubenville, Jefferson, Ohio 
Father Roderick Sheldon | F13860 Group Sheet Mother Mary Sheldon | F13860 Group Sheet
Female
+ Lydia Lucretia McDowell
Birth 4 Jul 1825 Steubenville, Jefferson, Ohio 
Death 24 Dec 1904 Cambridge, Middlesex, Massachusetts 
Burial Steubenville, Jefferson, Ohio 
Spouse Eli Todd Tappan | F12400 Marriage 4 Feb 1851 Steubenville, Jefferson, Ohio 
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Notes - U.S., Newspaper Extractions from the Northeast, 1704-1930, on ancestry.com, indexes the 30 Aug 1814 issue of the American Mercury of Hartford, Connecticut, which reported that Alexander McDowell and Mary Sheldon married in Steubenville, Ohio in August 1814, and that she was a daughter of "the late Roderick of Hartford."
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