I have found the World War II draft records at Ancestry.com to be a help in finding people and finding errors in my files as well.
In fact, I've found a rather serious error in my files and think I've got it corrected or at least on the path to correction.
I had Ernest Mattingly from the Thomas, II line, born 3-6-1888, son of John C. Mattingly and Sarah Marceline Mattingly, married to Ellen Brown and with eight children.He and Ellen are together on the 1920 census of Breckinridge County, KY. but she is several years older than he is and there are three children who are to old to be his.The eldest Robert, for instance was born about 1902 while Ernest was only 14.During the 1910 census Ernest was single and residing with his widowed mother who, incidentally, was from the line of Cezar and the daughter of William Jefferson Mattingly and Cecelia Mattingly.
The 1910 census shows Ellen with three children and a husband named Tan Mattingly.The first name is difficult to read on the census but I tend to believe this was Nathaniel Norbit Mattingly, also from the line of Cezar and the son of John Henry Mattingly and Emily F. Mattingly.Nat was born 6-6-1879 and died 6-7-1911.His death certificate states he was married as does his WW Idraft record but neither name a wife.
This is one of the busiest Mattingly on Mattingly lines I've seen recently and while I have no idea who Ellen's parents were it would not surprise me to discover her mother was a Mattingly.
Thought I'd share this in case someone has other ideas.I have not corrected my files at Rootsweb yet for I want to do further exploration first.