Marlene, the only information I have on John Stilwell comes from E. Stone Wiggins "History of Queens County." Arriving at Cumberland Point in 1783, he was an American Loyalist, having originated from Tuscarora, PA. Several children are named: Abigail, David, Harding, Hulda, Richard and Catherine.
William Ellsworth is also mentioned in Wiggins for the same area, although his point of origin is not identified. His children include: Harding, Benjamin, Isreal, John, Rebecca, Rhoda, Hanford and Catherine. His wife was Mahetable McCann or McMann.