The maternal relationship between Sophronia Ethel Upton and her daughter DET is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant TT.
The segmental (via DNA segment triangulation) and total DNA shared between TT and other confirmed descendants of
Charles Perry Upton/
Celinda Ellen Gray is consistent with the expected ranges for their respective relationships. Since TT descends from Charles Perry Upton/Celinda Ellen Gray through Sophronia Ethel Upton and her daughter DET, the presence of significant shared DNA between TT and other known descendants of Charles Perry Upton/Celinda Ellen Gray validates the generational links along this maternal line.
This supports the conclusion that DNA was passed from MRCA couple Charles Perry Upton/Celinda Ellen Gray through Sophronia Ethel Upton to DET, and ultimately to TT, confirming this direct ancestral connection through multiple generations.