Liz, I'm not sure, but this may help. The original JOHN LOUNSBURY (b. 1674) was the second Lounsbury to be born in this country to Richard Lounsbury and Elizabeth Pennoyer. He had a son named Johh born May 25, 1711. That's as far as I've gone with that line. Also the 1711 John had a brother named Michael who had a son named Jonathan born in1739. All were born in or near Rye, Westchester Co., NY. This could be some possible clues to your research. I hope I've helped.