The estate took its name from a group of oaks planted on the lawn by President Monroe, one from each of the then existing States, each tree presented to him for that purpose by a congressman from the State represented. Mrs. Littleton died in 1924. Mr. Littleton and his son Frank C. Littleton, Jr., continue to make the historic old place their home, carrying on extensive farming operations on its broad acres. On the 20th March, 1793, the first postoffice was established in Leesburg. The first postmaster was Thomas Lewis, who was succeeded on the 1st April, 1794, by John Schooley, who in turn gave way to John Shaw on the 1st April, 1801. Then came Thomas Wilkinson on the 1st April, 1803; William Woody on the 1st January, 1804, and Presley Saunders on the 12th February, 1823. At the end of the eighteenth century Loudoun was, in politics, a Federal stronghold. Colonel Leven Powell has long been credited with being the founder of that party in the county. The momentous election for members of the Convention of 1788 was bitterly fought. Stevens Thomson Mason and William Ellzey, both lawyers, were opposed to the adoption of the Federal Constitution. For its adoption stood Colonel Powell and Colonel Josias Clapham. Both of the latter, as we have seen, were old soldiers but no match as orators to their opponents and thus were at a great disadvantage in the contest. Powell's great personal popularity alone is said to have secured his election. Mason also won but the county remained so strongly Federal that its vote dominated its Congressional District. When war with Great Britain was forced upon us in 1812, a cavalry regiment was raised in Loudoun of which Armistead Thomson Mason of Selma became colonel. But the incident in that war which most prominently stands out in Loudoun's memory came in 1814. [Illustration: OAK HILL. EAST DRAWING ROOM, showing mantel presented to Monroe by Lafayette, and other historical furniture.]