And noone seemed to know it!!!

Does it count when it's in a published book? ;-)

Paul Slade in bis 2015 book "Unprepared to Die: America's Greatest Murder Ballads and the True Crime Stories That Inspired Them" gives Grayson & Whitter's September 1929 recording as the first version of "Tom Dooley" on disc.   Gilliam Grayson was the nephew of James Grayson who helped arresting Tom Dula.