My source of info on this family came from Raymond Lawson. His grandfather was married to two of Michael Light's daughters. William Light's will dated 25 Sept 1817 listed the names of his wife and their children. More info on this family can be found in the publication " History of Hawkins County (TN). Raymond had done quite a bit of research on his family line before his death. His grandfather was Thomas James Rosier and was married first to Lucinda Light. After her death he married Amey Light, who was Raymond's grandmother. His mother Ellen Rosier married Randolph Lawson. I would have to check out his paperwork to tell you how Raymond determined all the facts you mentioned. When I have time to do that I will post a new message or try to email you.