The maternal relationship between Kathleen Anne Sigulinsky and her son AM is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant AM.

The segmental (via DNA segment triangulation) and total DNA shared between AM and other confirmed descendants of William Jarvis/Elizabeth Dillon is consistent with the expected ranges for their respective relationships. Since AM descends from William Jarvis/Elizabeth Dillon through Kathleen Anne Sigulinsky and her son AM, the presence of significant shared DNA between AM and other known descendants of William Jarvis/Elizabeth Dillon validates the generational links along this maternal line.

This supports the conclusion that DNA was passed from MRCA couple William Jarvis/Elizabeth Dillon through Kathleen Anne Sigulinsky to AM, and ultimately to AM, confirming this direct ancestral connection through multiple generations.