Alexander Henderson, Colonial Merchant, born Glasgow, Scotland 1738. Came to Colchester, VA. 1756. Moved to Dumfries 1787, where his home still stands. Served as Vestryman Pohick Church, Magistrate of Fairfax and Prince William Cos., Member Virginia General Assembly, Virginia Delegate to Mt. Vernon Conference - 1785 which led to Constitutional Convention - 1787. Died Nov 22, 1815. Buried here with his wife Sarah Moore Henderson (1751 - Dec 14, 1816). Their son, Archibald, (1783 - 1859) was Commandant of the United States Marine Corps for over 38 years.