Genealogy of Fauquier County, with
Shortcuts to Ancestor Counties
Chickacoan Indian District 
(Original Shire)  
         |                         name changed to
Northumberland Co (1648)          York Co (1642/3)
         |   !_____________________._______!
         |                         |
         |                     Lancaster Co (1651)
         |                         |
Westmoreland Co (1653)         Rappahannock Co (1656-1692) defunct
         |                         |
Stafford Co (1664)            
Richmond Co (1692)
         |                         |
         |                   
King George Co (1721)                   
         !____________.____________!
                      |

          Prince William Co (1731)
         !____________-____________! 
		      |
		Fauquier County  (1 May 1759)

Please look at this map which depicts King George County. Notice how King George County goes right through Prince William County and actually was part of what would be Fauquier County.

From 1721 when King George County was formed until 1731 when Prince William was formed.