I believe Sallie Magdeline Scott never married. The 1900 census shows Sallie and Leo living with Roby Thomas's family. Sallie was a servant and her son was a boarder. In subsequent censuses no other "father" appears. Roby's father Joe was dead by the time the last boy was born. I would also point out Sallie is buried in the same cemetery as Roby Thomas. Good luck.