The proposed relationship of Thomas Fredericks as the father of William Fredericks and John Fredericks is supported by DNA evidence indicating shared ancestry within the family lines.

Specifically, DNA evidence confirms a 3rd cousin, once removed relationship between EV (a descendant of the William Fredericks ancestral line) and LC (a descendant of the John Fredericks ancestral line) with a shared segment of 81.70 cM across 2 HIR segments.

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