Carl, It seems Wm L had two children prior to 1770. Do you know who they are?
William Lemster Mobley, son of Edward and Mary Mobley, moved to Duplin County, North Carolina, and was married there on Aug 6 1767 to Marjery Stanley. In Sep 1769, he was living in Georgia and petitioned the colonial government for a grant of land, saying that he had a wife and two children, and two slaves. He asked for 300 acres in Halifax, St. George's Parish, adjoining the lands of Thomas Mobley, William Williams and John Burnsides. During the next few years, he accumulated 1,100 acres of land near Mobley Pond in St. George's Parish, later Screven County. Mobley Pond can be found on the British Army map of 1780, prepared for Col. Archibald Campbell, the commander of the British invasion." History of Screven County, pg. 231.