Hi Bernice: I have lots of information on this line of Mosby. Edward's father is Littleberry Mosby Jr. Littleberry's parents are Littleberry Sr. and Elizabeth Netherland. Littleberry Sr's parents are Benjamin Mosby and Mary Poindexter. I can not confirm that the John S. Mosby that you are looking for was married to Mary Winston. However, there is a John Mosby that is Littleberry Jr.'s grandson. This John Mosby is Dewitt Mosby's (one of Littleberry Jr.'s sons), son. He died in 1809. If you would like details or more information on this line please e-mail me, I will gladly help!