Hi- The information I obtained was passed on to me and came from a book by Dorothy Wood Ewers, called "This is Ewers". Yes, I have a Robert Ewers marrying a Martha Gregg. He was born in 1788. His parents were Jonathon Ewers b.) Dec. 27, 1732 Bucks County Pennslyvania. d.) March 19, 1816 Loudon County, Virginia. His wife was Sarah Gladney.Any more help I can give, just let me know.