The maternal relationship between Florence Whiteside and her daughter AC is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant SB.
The segmental (via DNA segment triangulation) and total DNA shared between SB and other confirmed descendants of
Henry Whiteside Sr. is consistent with the expected ranges for their respective relationships. Since SB descends from Henry Whiteside Sr. through Florence Whiteside and her daughter AC, the presence of significant shared DNA between SB and other known descendants of Henry Whiteside Sr. validates the generational links along this maternal line.
This supports the conclusion that DNA was passed from MRCA Henry Whiteside Sr. through Florence Whiteside to AC, and ultimately to SB, confirming this direct ancestral connection through multiple generations.