In the autumn of 1954, the Earl and Countess of Rocksavage, later the 6th Marquess and Marchioness of Cholmondeley, attended the British Horse Society’s combined training tests at Houghton Hall, Norfolk. Circa October, the event drew the elite of British equestrian society. Major Hugh Cholmondeley, an accomplished rider and military officer, was seen guiding his bay mare across inclement weather-laden grounds. Lavinia, known for her refined taste, wore a classic Burberry trench layered over Barb