About Mary Jackson
From http://mayflowerhistory.com/white-susanna/ updated Sept 2017
Susanna appears now to be the daughter of Richard and Mary (Pettinger) Jackson, who were married in Doncaster, Yorkshire in 1591, and later moved to Scrooby.
from http://mayflowerhistory.com/white-susanna/ (historian Caleb Johnson's website) OLD
Susanna White's origins, and maiden name, are unknownÂ The claim she was Susanna Tilley has been disproven, and the William White who married Anna Fuller in Leiden is now generally believed to not have been the Mayflower passenger.ÃÂ That particular William White witnessed an antenumptual agreement of Samuel Lee in Leiden in April 1621, and witnessed the marriage of Sarah Priest in October 1621, and so couldn't have been the Mayflower passenger So, Mrs. Susanna White's identity and English origins remain unknown
See more discussion here: https://en.wikipedia.org/wiki/William_White_(Mayflower_passenger)_