I am a cousin to one of the participants in the Stafford Co VA family you mention. The DNA results show no connection to the Presidential Adams family. Our research has linked this family to three Adams brothers who arrived in the Northern Neck of Virginia at or around 1652 -- John Adams b ca 1627, Dr William Adams, died at Northumberland Co 1658, and Thomas Adams, died at Northumberland Co ca 1689. The exact relationship to John Adams, carpenter, of Northumberland Co is speculative, except to state that 1) John Adams in 1701/02 sold land originally purchased by Thomas Adams, 2) Thomas Adams can be shown in the records never to have married or had children, 3)that John Adams probably had a brother William Adams who died childless in 1677. The DNA results show that Absolem Adams was very closely related to the Northern Neck Adams men who descend from John Adams, carpenter. The identity of all John Adams' children is not entirely clear -- what can be shown in the records is that he had children named Daniel, John, George, Richard, and William. The participant designated as 014 on the DNA testing claims to be a descendant of Gabriel Adams. If that descent is correct, then the DNA results confirm that Gabriel Adams was not related to John Adams, carpenter of Stafford Co. I have made attempts to contact the participant with no success. Without information as to how he traced his line of descent it is impossible to say whether 1) his descendancy is incorrectly stated or 2) Gabriel Adams is a member of a wholly unrelated Adams family. As to Absolem Adams, both the DNA results and the sparse information available on his life strongly suggest that he was a direct descendant of John Adams, carpenter and wife Katherine, but researchers in the line have been unable to make the exact connection. The gaps in early records have thus far proved insurmountable in assigning the various Adams-surname individuals to the appropriate fathers.