John, born about 1745, was the son of Mary and Edward Tatlock. He married Keziah and they had at least seven children: Elizabrth, Absolom, Jemimah, Peninah, James, Mellicent, and Thomas It is presumed that John died about 1791, as Kezia is listed several times, in the Meeting Records during 1792-3, requesting assistance, for herself and the children. Keziah married Josiah Albertson in 1795 or 1796. 
↑Quaker meeting records Encyclopedia of American Quaker genealogy, by ... v.1. Hinshaw, William Wade, 1867-1947. - page 120
↑Quaker meeting records Encyclopedia of American Quaker genealogy, by ... v.1. Hinshaw, William Wade, 1867-1947. - page 168
Mildred Fowler's notes on the Roach/Roche family collaborative research with Alfred L. Roach of Tulsa OK
"United States Census, 1790," Database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XHK1-R9L : accessed 20 June 2015), John Tatlock, Pasquotank, North Carolina, United States; citing p. , NARA microfilm publication , (Washington D.C.: National Archives and Records Administration, n.d.), roll ; FHL microfilm .
It may be possible to confirm family relationships with John by comparing test results with other carriers of his ancestors' Y-chromosome or 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 DNA with John: