The maternal relationship between Alicia Hamersley and her son Perry Marlatt is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant WM.

The segmental (via DNA segment triangulation) and total DNA shared between WM and other confirmed descendants of Peter Hammersley/Lydia Fuller is consistent with the expected ranges for their respective relationships. Since WM descends from Peter Hammersley/Lydia Fuller through Alicia Hamersley and her son Perry Marlatt, the presence of significant shared DNA between WM and other known descendants of Peter Hammersley/Lydia Fuller validates the generational links along this maternal line.

This supports the conclusion that DNA was passed from MRCA couple Peter Hammersley/Lydia Fuller through Alicia Hamersley to Perry Marlatt, and ultimately to WM, confirming this direct ancestral connection through multiple generations.