Home Welcome to Qualia Dressage, LLC. Siobhan Byrne is a USDF Gold, Silver, and Bronze medalist who develops horses and riders from green to Grand Prix through thoughtful, systematic training. Based at Locks Edge in Poolesville, Maryland, we have a busy competition schedule in addition to hosting educational events. Our small size allows for individualized attention, and flexible training programs. Learn more on how our passion for education and development can bring out the best in you and your horse. LEARN MORE Siobhan and her horse Hans (Sir Donnerhall I – Fabuloso) competing in the inaugural CDI 2* Lexington at the Virginia Horse Center. Photo by Susan J Stickle.