John Hascall + Martha Lauson

Hi, I am very new to this site.  I've been trying to join the Mayflower Society, and to do so, I only have one connection that I have to prove.  They already have up to John Hascall and Martha Lauson verified.  I need to get one generation lower and have proof that Mary Hascall, who married Jonathan Townsend, is in fact their daughter. According to Richard K. Hascall, who is the official historian/genealogist for the Haskell Family Association (http://haskellfamily.org/), this is the case.  I've emailed him, and he doesn't have anything that the MS will take as concrete evidence.  He has been in contact with Fred Dunn, who is a descendant of Jonathan Townsend through his second wife, and he got some of his information from him through letters.

Basically, I am looking for evidence of this connection.  Any info that anybody knows would be very helpful. Thank you.

Joe Heath

George Soule>Patience Soule>John Haskell>Joseph Haskell>John Hascall>Mary Hascall>Sally Townsend>Thomas Millen Briggs>Adella Arminta Briggs>Alphonso Artemas Heath>Kenneth Sylvester Heath>Stanley Kenneth Heath>John Allen Heath>Joseph John Heath (me)