Born July 30, 1905 in Clayton, he was a lifelong resident of Panola County. He was a retired merchant at the Clayton store and a retired mail carrier. He died on August 3, 1990 at his residence in Clayton.
DNA
Paternal and Maternal relationships are both confirmed by an autosomal GEDmatch comparison between J.R. Duke, GEDmatch kit # XM3705286, and J.R., GEDmatch kit # T619292, his 1st cousin 1x removed. Their most-recent common ancestors are William Duke and Sarah Ross, the grandparents of J.R. Duke and great grandparents of J.R. Estimated number of generations to MRCA = 2.34, based on sharing 562.2 cM across 18 segments.
Paternal and Maternal relationships are both also confirmed by an autosomal Family Tree DNA test match between J.R. Duke and D.C., his 1st cousin 1x removed. Their most-recent common ancestors are William Duke and Sarah Ross, the grandparents of J.R. Duke and great grandparents of D.C. Predicted relationship from Family Tree DNA: 1st-2nd cousins, based on sharing 602 cM across 21 segments.
Paternal relationship is also confirmed by an autosomal AncestryDNA test match between J.R. Duke and R.R., his 2nd cousin 1x removed. Their most-recent common ancestors are Jack Duke and Lucinda Fallwell, the great grandparents of J.R. Duke and great great grandparents of R.R. Predicted relationship from AncestryDNA: 2nd-3rd cousins, based on sharing 240 cM across 12 segments.
Maternal relationship is also confirmed by an autosomal AncestryDNA test match between J.R. Duke and R.K., his 2nd cousin. Their most-recent common ancestors are John Henry Ross and Amanda Duke, the great grandparents of both J.R. Duke and R.K. Predicted relationship from AncestryDNA: 2nd-3rd cousins, based on sharing 321 cM across 15 segments.
Sources
Find a Grave, database and images (accessed 13 January 2022), memorial page for John Bernard “J.B.” Duke (30 Jul 1905–3 Aug 1990), Find A Grave: Memorial #26084360, citing Clayton Cemetery, Clayton, Panola County, Texas, USA; Maintained by jduke79 (contributor 50301134).
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DNA Connections
It may be possible to confirm family relationships with John by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree:
John Duke :
Family Tree DNA Y-DNA Test 700 markers, haplogroup I-BY62571, FTDNA kit #B750248, MitoYDNA ID T17926[compare]