It may be possible to confirm family relationships with Granville 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 Granville:
Riddle-179 and Riddle-141 do not represent the same person because: There is no information to indicate that these two men are the same person. Archilbald Riddle's tombstone photo is from Canada. Granville Riddle was born and died in Virginia/West Virginia. He was my maternal great grandfather.