The maternal relationship between Margaret Katherine "marge" Overbey and her DNA tested son TDC is confirmed by the direct inheritance path of autosomal DNA.
The segmental (via DNA segment triangulation) and total DNA shared between TDC and other confirmed descendants of
Thomas Townsend Watson/
Sabra Jane Bennett is consistent with the expected ranges for their respective relationships. Since TDC descends from Thomas Townsend Watson/Sabra Jane Bennett through Margaret Katherine "marge" Overbey, the presence of significant shared DNA between TDC and other known descendants of Thomas Townsend Watson/Sabra Jane Bennett validates the generational links along this maternal line.
This supports the conclusion that DNA was passed from MRCA couple Thomas Townsend Watson/Sabra Jane Bennett through Margaret Katherine "marge" Overbey to TDC, confirming this direct ancestral connection through multiple generations.