↑ 1920 United States Federal Census. HORAN Jefferson D. Database online. Justice Precinct 1, McLennan, Texas, ED , roll , page , image 602.
↑ 1880 United States Federal Census. Database online. Year: 1880; Census Place: Austin, Travis, Texas; Roll: T9_1329; Family History Film: 1255329; Page: 191.2000; Enumeration District: 130; Image: .
↑ 1930 United States Federal Census. Database online. Year: 1930; Census Place: Waco, McLennan, Texas; Roll: 2373; Page: 12A; Enumeration District: 8; Image: 382.0.
↑ Texas Death Index, 1903-2000. HORAN Jefferson Davis. Database online. FOOT Ancestry.com, Texas Death Index, 1903-2000 (Provo, UT, USA, The Generations Network, Inc., 2006), www.findmypast.com, HORAN Jefferson Davis. Database online.
↑ One World Tree. HORAN Jefferson Davis. Database online.
↑Gedmatch X match one to one comparison confirmation of relationships between T766864, T410351 and A969300; resulting in Triangulated segment = 14 cM, Chromosome 23, 99.7-115.4, 30 Dec 2016.
↑ ‘’Gedmatch triangulated group’’ confirmation of relationships between Joan Coates GEDmatch T485376, Anthony Cassidy GEDmatch M530833; and Don Temples GEDmatch A969300, overlapping shared segments of approx 10.6 cM segment on Chromosome 1 from 4.6 to 10.7, www.gedmatch.com. Triangulated 24 Feb 2017. Additional members of the larger triangulated group also include Michael Stevens and Steve Yeager.
It may be possible to confirm family relationships with Jefferson 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 DNA with Jefferson: