Mary Elizabeth Whitney Person Tippett (born Mary Elizabeth Altemus) (18 June 1906 – 30 October 1988) was a wealthy American socialite and philanthropist who was a champion horsewoman and for more than fifty years, a prominent owner/breeder of Thoroughbred racehorses. Born in Wynnewood, Pennsylvania, Liz Tippett was the daughter of Elizabeth Dobson and her husband Lemuel Coffin Altemus, a wealthy entrepreneur who made his success in the textile business. “Liz”, as she would become known throughout her life, developed a love of horses and equestrian competitions at an early age. A 1939 TIME magazine article describes her as “a spirited, devil-may-care rider who has been winning blue ribbons on the horseshow circuit for 15 years” and whose “riding technique became the very pattern for aspiring horsewomen.” Through her social standing and involvement with horses, Liz Altemus met and married John Hay “Jock” Whitney, a member of the extremely wealthy Whitney family of New York. Jock Whitney’s grandfather, father and uncle were all heavily involved in Thoroughbred horse racing. For their 1930 marriage, he bought his bride Llangollen estate, a large and historic property off Trappe Road west of Upperville, Virginia at the foot of the Blue Ridge Mountains.

Eight miles from the village of Middleburg, the area had long been home to many horse farms and since the mid-19th century, a center for equestrian events. By the early part of the 20th century Thoroughbred breeding operations were gaining importance and in 1930, Liz Tippett would be one of the first of a number of prominent personalities in Thoroughbred horse racing who would develop substantial and important breeding operations. Others who came to the area include heiress Isabel Dodge Sloane, who built the highly successful Brookmeade Stud, the very prestigious Rokeby Farm of Paul Mellon, Jack Kent Cooke’s Kent Farms, and the Newstead Farm of Diana M. Firestone and her husband Bertram. Since the early 1960s, for two days each year more than ten horse farms and centers in Upperville and Middleburg open their gates to visitors. The Hunt Country Stable Tour  raises money for the outreach programs of Trinity Episcopal Church in Upperville. A prominent part of the hunt set, Liz Whitney was a member of the Upperville Colt and Horse Show for many years and has a place on the organizations Wall of Honor. Following her marriage to Jock Whitney, the new Mrs. Whitney immediately became involved in Thoroughbred racing. Not satisfied to watch her husband race horses, she set up her own operations and made her Llangollen home a major breeding and training center. On the property she constructed a variety of equine fittings, including a famous horseshoe-shaped barn, stud barn and broodmare sheds, tack rooms, paddocks, and a training track.

In the 1930s, she owned a string of successful racehorses, winning the 1931 Adirondack Stakes with her filly Brocado and with Stepenfetchit, won the 1932 Latonia Derby and ran third in the Kentucky Derby. With her colt Singing Wood, Liz Whitney won the 1933 Belmont Futurity Stakes, the 1934 Withers Stakes and Queens County Handicap. In 1936 Singing Wood won the Toboggan Handicap at Belmont Park in Elmont, New York and when her husband’s business interest took the couple to Hollywood, the colt raced there and won the 1936 Santa Margarita Handicap. Divorced in June 1940, Liz Tippett retained the Virginia estate and in Upperville in June 1948, she married for a second time to Dr. E. Cooper Person, Jr., a surgery professor. She would be married a third time in November 1954 in Washington, D.C. to Richard Lunn, a forty-year-old public-relations man and step-son of U.S. Senator Wallace H. White. Her fourth marriage, in 1960, was to Col. Cloyce J. Tippett (1913–1993). This marriage, her longest, lasted until her death in 1988. Following her divorce from Jock Whitney, in its March 16, 1942 issue, TIME magazine reported that Liz Whitney planned to concentrate on racing and would sell all but one of her show horses. Nonetheless, she remained very active in equestrian sport for many years and race horses in both flat racing and steeplechase events under the name of Llangollen Farm. She imported bloodstock from Europe for breeding purposes and over the years expanded operations to breed horses in Ocala, Florida and in Ireland.

She also purchased a farm property on Fitch Road in the town of Saratoga, New York. The house, built in the 1770s, was used as her residence during the racing season at nearby Saratoga Race Course where many of America’s horse racing elite gathered each summer. Sold in 1971, the property today is owned by McMahon of Saratoga Thoroughbreds, LLC. Her stable colors of purple and pink on farm structures in time have given way to the more modest colors for McMahon of green and white. Liz Tippett worked with notable trainers such as future U.S. Racing Hall of Fame inductee Henry S. Clark who got his first stakes win with her colt, Blue Cypress. Other trainers of note who conditioned Llangollen Farm horses were James W. Healy, Stanley T. Greene, Frank H. Merrill, Jr. and another future Hall of Fame trainer Charlie Whittingham who got his big break when she hired him to run her California stable. In 1953, Whittingham trained his first Champion in the form of her two-year-old colt, Porterhouse. She bred Sherluck, winner of the 1961 Belmont Stakes. At her Llangollen estate, Liz Tippett entertained celebrities and politicians as well as personalities involved in the racing world such as Bing Crosby, Eddie Arcaro and Prince Aly Khan. Always a free spirit, in a 2001 book titled The Middleburg Mystique, author Vicky Moon recounted how Whitney hosted wild hunt balls and of the time when she brought her favorite horse into the mansion’s great room. Moon’s book also says that she kept thirty-five dogs with the most beloved ones stored in her deep freezer after they died. Tippett died of cancer in 1988 at Llangollen Farm. In 2004, she was inducted posthumously in the Virginia Thoroughbred Association Hall of Fame.