To confirm relationships found through genealogical research.

To identify subgroups within the family with the eventual aim of proving how various branches are linked in cases where the standard genealogical records leave room for doubt.

To determine whether or not the Hadrill and Haddrell etc. families have the same origin, regardless of the current or historical spelling of the surname.

To divide members into groups if DNA results show that there are two or more lineages with the same surname but unrelated patrilineal ancestry.