Is there a clear historical distinction between the Baptists and the Anabaptists?
There are several key distinctions between the two groups...however, there is a great deal of discussion among historians that both conflates the two groups or at least demonstrates some kind of genetic heritage of the former from the latter.
My position (just to get it out of the way) is that Baptists are spiritual (and theological) descendants from the English Separatist movement and that the first "Baptist", John Smythe, found his formative theological expressions within the Separatist movements. Anabaptists did influence him, most particularly on the issues of baptism and ecclesial structures. But that influence was not total. To this end, imho, John Smythe and several of the other key initial leaders of the Baptist movement arose from the English side and from the Dutch Anabaptist movement.
Anabaptists were a small group from the radical reformation that arose in the Netherlands (though their formal origin in from within Switzerland) in late 1500s, particularly from the Zwickau Prophets. They lived in a radical communities across Europe and were led by individuals such as Balthasar Hubmaier and Felix Manz.
Their name is a bit confusing historically, but they are better seen in their present day incarnations as Amish, Mennonites, and the Hutterites.
John Smythe and Thomas Helwys were influenced by the Anabaptists while living in exile from England among their sect in Holland.
I can answer more questions as they arise.
