I am in no way related to your John Adams (that I know of) but as a genealogical librarian and Adams researcher (another line)I thought you might find the following citation helpful.
"John Adams,"page 11, The Great Migration Begins, Immigrants to New England 1620-1633, vol 1 A-F, Robert Charles Anderson, Great Migration Study Project, New England Historic Genealogical Society, Boston 1995
Bob Anderson's work is the definitive study of this time period and he is a demon for rigorous anaylsis of source material.His treatment of John Adams is short (only 1+ page)but exhaustive.
If you are unable to find this set at your local library e-mail me privately with your snail mail address and I will send you a photocopy.
Its always great to read postings from a careful researcher. Heather