The proposed relationship of Cornelius Jenkins as the father of Harry Jenkins and Jack Jenkins is supported by DNA evidence indicating shared ancestry within the family lines.

Specifically, DNA evidence confirms a 3rd cousin, once removed relationship between TR (a descendant of the Jack Jenkins ancestral line) and JL (a descendant of the Harry Jenkins ancestral line) with a shared segment of 99.11 cM across 4 HIR segments.

This match is consistent with their placement within these shared ancestral branches.