Remember this ... in those early years most spoke broken English or none at all. In my line John Seckler was buried as John Sickler however further down the line his children spelled it Seckler and all the dates matched up therefore, Sickler is Seckler. Its tough I know, just look for that one tie in to make your connection strong. I am still working on John to make a even stronger connection.
Another story my Grandmother and Grandfather on my fathers line had children before they ever gotten married. Ask yourself those questions, frustration is part of this game it had taken me 3 years and two weeks ago I broke down that brick wall by finding one date of death that changed me thinking and made my days.