Happen to have lived in Marbletown, New York where
John died about 1732. Susanna Beatty moved in 1732 from Marbletown
to New Jersey and then to then Prince George's County, now Fredrick County, MD.
You should check with the Frederick County Historical Society, Marie Erickson of Braddock Heights
MD(a decendent) and Joseph Lubozynski of the Frederick County Landsmarks Foundation(Susanna Beatty's House is still standing!)
Also the Higginson Book company of Salem MA has a book on The Ancestry of John Betty and Susanna Asfordby, by R.K.Turk,183p,1909
for $29.50 Good Luck and hope this helps you, RiK Rydant, High Falls, New York