Again, thanks! You've got some good leads there. It looks like using the internet is like any other research, you have to plug away a piece at a time. For the past three days I have been picking away at Quaker and upstate New York sites to find traces of Robert Flewellings family that went that way. Just fragments so far, but enough to give me hope that something useful might be found. Your reference to 1660 sort of pushes Thomas Flewelling's appearance back a little further.
When I started genealogy, I was so trusting and believed everybody. Now, its produce the proof. And I'm just as bad. In most cases, when I've proved something to my satisfaction the documents and references are 'stored' away. As an example, my theory is that Abraham Jewell Flewwelling was the son of James Flewelling, who was the son of John and Deborah (Denton) Flewelling, son of John, son of Thomas, son of Thomas. If I had to prove one link of that lineage, I couldn't do it, but with 200 pages of single-spaced writing, I could compose a very convincing argument. The problem is that so much of it is based on elimination, and you don't know what you have missed until you look at everything. And then, when you use indices or search engines, you miss variations in spelling like "Welling" or "Forelling".