The proposed relationship of Vera Myrtle Meeker as the mother of TLB and JB is supported by DNA evidence indicating shared ancestry within the family lines.
Specifically, DNA evidence confirms a aunt / uncle relationship between DB (a descendant of the TLB ancestral line) and JB with 1546.31 cM of shared DNA across 49 HIR segments.
This match is consistent with their placement within these shared ancestral branches.