Hi Kevin, THANKS :) so much for this new data that you sent me below.
Margery was the dau. of John Paston & Margaret Mauteby; my ancestor, William Paston [ob. 1496], was a younger brother of John. Our shared ancestors are the parents of William and John, Judge William Paston and Agnes Berry.
This online GEDCOM contains quotes from a monograph on the Pastons. Hopefully this will provide some new information for you: