My ancestor Edward Lewes-8 was born in Staplehurst, Kent in 1634, the year his father George Lewis-467 emigrated and settled in Scituate. Edward's mother Mary (Doggett-341) Lewis came over to join her husband sometime between 1635 and 1637, bringing Edward and his elder siblings Mary Lewis-10583, George Lewes-7, Thomas Lewis-91, and James Lewes-164 along. This is discussed by Anderson in his entry for father George Lewis in The Great Migration, Vol. IV, pp. 281-284. His mother and his three eldest siblings are designated as PGM. So don't Edward (and his brother James Lewes-164) also qualify for the PGM category?