FORMATION OF VIRGINIA COUNTIES WESTMORELAND CO: In 1664 Stafford Co (from W part of Westmoreland) In 1730/31 Prince William Co (from N part of Stafford) In 1742 Fairfax Co (from N part of Prince William) In 1757 Loudon (from W part of Fairfax) ******************************* FINCASTLE CO In 1776/77 Montgomery Co from Fincastle In 1789 Wythe (from SW part of Montgomery) In 1839 Pulaski Co (from SE part of Montgomery & NE part of Wythe) ********************************* SPOTSYLVANIA CO In 1734 Orange Co (from W part of Spotsylvania) In 1738 Augusta Co (from W part of Orange) In 1738-1743 Frederick (from part of Orange & Augusta) In 1772 Dunmore (from S half of Frederick Co) In 1778 Dunmore renamed Shenandoah In 1831 Page Co (from SE part of Shenandoah) In 1836 Warren Co (from NE part of Shenandoah )