She was one of the first three women to be elected as a member of the Jockey Club in December 1977, alongside Priscilla Hastings and Ruth Wood (née Primrose), Countess of Halifax.
Her father, Colonel Fulke Walwyn, was an officer in the Royal Welch Fusiliers, and Master of the Monmouth Hounds from 1922 to 1931.
The couple bought the Woodway stable near Blewbury from trainer Francis Cobb in 1945, and moved to Berkshire (now Oxfordshire).
While she continued to train the horses, the licence was officially held by Colonel Dick Poole, then Charles Jerdein, then her cousin Peter Walwyn, before her son Fulke Johnson Houghton took over in 1961.
Her achievements were belatedly recognised by the Jockey Club in December 1977, when she was one of the first three women to be elected as a member, alongside Priscilla Hastings and Ruth Wood (née Primrose), Countess of Halifax.