Henry Moffett married Hannah probably in Prince William County but lived in Fauquier County.

From The SYDNEY-SMITH and CLAGETT-PRICE Genealogy, by Lucy Montgomery Smith (Shenandoah Publishing House Strasburg, Virginia: 1927), page 85 (from Jim Burgess):

Henry Moffett married [Sir Walter] Anderson's daughter, Mary, then married second her sister, Elizabeth. Moving from the lower North Neck of old Virginia, we find his settling in the foothills of the Blue Ridge Mountains, in the fertile valley of Carter's Run, which once was old Rappahannock County, then Richmond and now Fauquier.

Also from Jim Burgess:

Judge W W Moffett says, "... My great-grand father, Henry Moffett, prior to 1735, married Mary Anderson, who died leaving a large family. Henry married her sister, Elizabeth, some of the later descendants still reside on a part of the 818 acres of land. Anderson is a favorite name in my family..."