I bought a book off of ebay that was from the earliest Dutch in N.Y. According to this book, Holland was just a Pike, I would think the same thing we call an Island. Our relatives lived on this Pike and the town close by was Amsterdam. Holland was enlarged as often as the people could push more of the sea away from the pike, build a new dam, and then when it started to dry they would fill the new area in with dirt. However, the late 1400's the only way off of this pike was by boat, you had the Sea or the Rhime River taking you to Germany. At that time all buildings were built real close together and out of wood. A large fire consumed the whole town of Amsterdam, and the dry grass spread to the Villages. The only survivors, were the ones that had boats and traveled across the Rhine River into Germany and it was a century before Amsterdam and that Pike was re established, and a new law that did not allow any buildings with wood on them.
I know a Dr. Kuykendall had done research in Holland and through out the Netherlands, he visited with my Father to find out how he was connected. He told my Father that we all had to be Dutch/German. I had heard that before, but did not think so, until I read this little hard back book about New Amsterdam (now Manhattan) and the rest of the State was called The New Netherlands, which of course when the British took it away from the Dutch in 1764. It became New York and The Island of New Amsterdam was renamed the English name of Manhattan. So our Dutch ancestors would more than likely have married into the German's line across 100 years.
Also this Book said that the Dutch were the first to bring across Slaves. The first group contained 19 Slaves, they had been purchased off of one of the Dutch Islands. Any added information will be appreciated.