Burial:
Hartford Cemetery
Hartford
Minnehaha County
South Dakota, USA
Census
1850
Avon, Lake Co., Illinois
4-4 Farmer
1850
Lake Co., Illinois
1860
Avon, Lake Co., Illinois
Farmer
1870
Owen, Cerro Gordo, Iowa
1880 Township 102 Range 51, Minnehaha, Dakota Territory
Frank Van De Mark Self M 28 Illinois, United States
Amealia Van De Mark Wife F 26 England
Guy E Van De Mark Son M 0 Dakota Territories
Henry Van De Mark Father M 59 New York, United States
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MCVW-8SL : accessed 24 December 2015), Henry Van De Mark in household of Frank Van De Mark, Township 102 Range 51, Minnehaha, Dakota Territory, United States; citing enumeration district ED 24, sheet 524B, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0113; FHL microfilm 1,254,113.
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DNA Connections
It may be possible to confirm family relationships with Henry Alexander by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share some percentage of DNA with Henry Alexander: