I have the following source information-- (2) "A History of Two Virginia Families," "Catlett Family & Baytop Family," as published in the Genealogical Column of the "TimesDispatch," R ichmond, Virginia, p.109. FHL #1,065,175, item 13, & #929.273 B3455. !Marriage to Anne Morgan: (1) (2) 1707: Dr. David ALEXANDER was the owner of a lot in Miles CARY's survey of Gloucestertown (now Gloucester Point). John FLEET had patented Gloucester Town, then Tyndall's Point, in 1662.
Given the information above Dr. David and his family lived in Gloucestertown, Gloucester County, Virginia.I do have as an alternate birthplace for his daughter Anne Rappahannock County, Virginia, but the family certainly lived in Gloucester County, Virginia.