Unless they had a descendant who married into the Potowatomie tribe and established a Jackson descendancy from the area around Sault Ste. Marie in Canada before 1800, it looks like I can't make a legitimate connection to Richard and Ursula Hildyard of Yorkshire from back in the early 16th Century. Too bad (for me), because the story of that ancestral line is fascinating. And also, I've recently discovered that Sir Anthony Jackson had no recorded children.