Kathleen Blanchard began the McHale Y-DNA group in 2006. The project later became an important part of the research network that helped bring the modern Clan together.
What Y-DNA can do
Y-DNA follows the direct paternal line from father to son. For surname research it can help determine whether tested paternal lines share a more distant male ancestor, identify clusters and branches, and test genealogical hypotheses where the written record is incomplete.
What Y-DNA cannot do
It does not prove that every person with the surname descends from one historical man, identify an exact medieval ancestor by itself, or replace parish, civil, land and family records. Clan identity is broader than a single genetic line.
Current technical material
DNA trees, SNP labels and interpretations can change as more people test. Rather than duplicate technical material here and allow it to become stale, this site sends researchers to the dedicated McHale DNA website.
A note on older theories
Early Clan newsletters contain evolving interpretations of the deeper paternal origin of tested McHale lines. They are historically valuable, but technical conclusions should be checked against the current project before being repeated as settled fact.