The proposed relationship of Leroy D. Mayfield as the father of SLM and JEM is supported by DNA evidence indicating shared ancestry within the family lines.
Specifically, DNA evidence confirms a aunt / uncle relationship between SP (a descendant of the SLM ancestral line) and JEM with 1851.48 cM of shared DNA across 49 HIR segments.
This match is consistent with their placement within these shared ancestral branches.