Many people believe that their ancestor came to America on the Mary and John in 1630 or at a later time. There have been many passenger lists published and many genealogies that state this for an absolute fact. The problem is that there are no known passenger lists for the Mary and John. Even the latest guess of who that passengers might have been admits there is a 50-70% chance of error. To see the latest guesses listed as "certain or highly probable", probable or possible go to http://www.maryandjohn1630.com/passengerlist.html This site will give you some links to other information about the Mary and John as well. Bette