I responded to your thread on the same subject: http://boards.ancestry.com/topics.researchresources.brick-20...
What research have you done since?
The data to find on-line has been quite exhausted. Your post doesn't detail what you've researched off-line and where you still can't find documentation. You need to be very specific about the sources you've covered.
None of the evidence found thus far indicates there is NA origin in these lines. The evidence does indicate reasons why this NA story might have been concocted and it being perpetuated. It's not uncommon for a less than flattering history to be replaced with a romantic myth.
Again, the evidence writes the story, not the other way around.