Gift of Proprietary is ratified when Charles II is restored to the monarchy following Cromwell’s death in 1658.

The last of the seven noblemen dies, and the land passes to Lady Culpepper and her husband, Thomas Fairfax V.

Fairfax dies and Robert “King” Carter is land agent in the Virginia colony managing the Proprietary and collecting rents on behalf of widow Culpepper and her son Thomas Fairfax VI.

Robert “King” Carter dies. Fairfax is in London and reads King Carter’s obituary, learning that Carter has been defrauding them for the past 30 years.

Fairfax moves his cousin, William Fairfax, to Virginia to manage the Proprietary. Cousin William sets up at “Belvoir” in the Tidewater near Mount Vernon.

Fairfax realizes Cousin William is also doing a poor job of managing the Proprietary, so he moves to Virginia to manage things himself. He sets up at Belvoir with Cousin William.

Fairfax realizes that the Proprietary is much larger than he had thought and moves to Clarke County, centrally located in the Proprietary, and sets up Greenway Court. A white post is stuck into the ground to mark the place where rents are to be paid. Fairfax establishes the 160,000-acre Manor of Leeds (named after his home in Great Britain) as a private hunting preserve. The balance of the five-million-acre Proprietary is used for income.

Fairfax dies. By now, Loyalist ownership of American property is challenged. Denny (Martin) Fairfax, a nephew of sorts, came to America to collect his inheritance of Lord Fairfax’s estate. A young lawyer named John Marshall was hired to help sort out unappropriated lands, sort out titles, and collect outstanding rents.

Denny (Martin) Fairfax’s ownership is challenged. This is the beginning of Martin v. Hunter, which was finally decided in the Supreme Court in 1816.

1st: James Markham Marshall, brother John Marshall, and brother-in-law Rawleigh Colston contract to purchase the 160,000-acre Manor of Leeds from Denny Fairfax. However, this contract is “subject to leases executed prior to May 1793” and subject to unappropriated lands remaining in litigation (Martin v. Hunter). Because of the problems with clear title, and because of a lack of funds, the sale does not close until 1810.

2nd: Denny Fairfax leases an 18-acre parcel — “Lot 407 in the Manor Line” — to a planter named Demsey Carroll. Carroll appears to be another Tidewater investor; he never occupies the property.

Carroll assigns his lease to Leven Powell, who purchases it as an investment, never assuming occupancy. Tenants farm the land and pay rents. This 18-acre piece is inside the Manor, and, therefore, this lease is honored in the Marshall- Fairfax contract for sale. As part of the prescription of lease, the lessee is required to build a patent house, 16’ x 20’ with stone chimney and a walled orchard of 100 trees. The 1795 patent house still stands and is presently the Breakfast Room at Llangollen.

Leven Powell’s will is written in 1810. By this time, Powell has amassed 505 acres adjoining the Llangollen patent house and original 18-acre piece. “Lands which I purchased of Dempsey Carroll, including land held under the late Lord Fairfax and Martin” are willed to his son Cuthbert, who would develop this tract of land into Llangollen.

Cuthbert Powell resigns from public life and resides permanently at Llangollen. This is Llangollen’s heyday, when many of the improvements are made. Cuthbert continues to enlarge the house, adding the south parlor and purchasing adjacent, large parcels of land, including property across Trappe Road

The decade before the Civil War is a difficult time for Llangollen. After Cuthbert Powell passes away in 1849, Llangollen changes hands several times. The next owner, Dr. Joseph Gray, is married in the manor house parlor.

Dr. Gray sells Llangollen to Upperville resident Robert Singleton for $40 an acre in 1861. Two years later, George Ayre, who owns three other nearby properties, purchases Llangollen.

The Battle of Bull Run is the first major battle of the Civil War in 1861. In 1863, the Battle of Upperville is fought during the Gettysburg Campaign. Both occur in immediate proximity of Llangollen.

Ayres has some financial success with Llangollen during Reconstruction after the Civil War, but the 1880s bring more hardship.

Llangollen is sold to Colonel John Oothert Seibert, the wealthy son of a New York banker. He lives as a bachelor in Washington, D.C., with his parents and sister until moving into his new home in 1898. He entertains preeminent guests at Llangollen, including Count von Arnim of the German Embassy and Mr. Wauters Charge d’affairs of Belgium, according to an article in the Richmond Times Dispatch in 1901.

Seibert sells Llangollen to Harry Toulmin of Washington, D.C. The early 20th century ushers in a new era of prosperity in Loudoun County. Wealthy equestrians are attracted to the “hunt country” of the Blue Ridge Piedmont. The Toulmins buy land surrounding the estate and invest extensively in the manor house’s architecture, increasing the property’s value.

The Baers own Llangollen for a year, then quickly sell it to Thomas Crockett in 1923. During their ownership, the Crocketts improve the value of the buildings.

In 1930, John Hay “Jock” Whitney buys Llangollen Farm as a wedding present for his beautiful wife, Liz Altemus Whitney. Whitney is one of the richest men in the country, a larger-than-life millionaire. He has a passion for thoroughbred racing, and so does Liz. As a wedding celebration, Jock organizes a two-day steeplechase race for 20,000 spectators called the Llangollen Race Meeting.

The Ash Family purchased Llangollen from the estate of Liz Whitney Tippet in 1989. During the Ash tenure the focus was on major improvements to all the services and utilities in the Manor House and furnishing it with antiques from Europe circa 1850. They also expanded the two end wings of the Manor and improved sections of the land and other elements of the infrastructure on the 1,100 acre estate.

The Brennan family purchased Llangollen in 2006 and continued restoration of the Manor House and the adjacent world-famous Horseshoe Stables built by Jock Whitney in the 1930’s. The Manor House and Stables, internally and externally, mirror the architecture of the early 1800’s -1900’s, yet with modern amenities. The Brennan's invested heavily in renovating all estate structures, adding service facilities, upgrading miles of interior roads, stone and post fencing and created a world-class polo facility on a dedicated portion of the estate. Llangollen has been home to the Virginia International Polo Club, founded by Maureen Brennan, a top class polo player.