Champion Horsewoman Pat Smythe with her horse Prima Donna on whom she competed at the Royal Windsor Horse Show to-day. To-morrow she will embark the horses Prince Hal and Eforejiot for Lisbon to compete there and will follow by air herself next week. Champion horsewoman Pat Smythe with her horse Prima Donna after competing at the Royal Windsor Horse Show recently. Miss. Pat Smythe Britain's champion horsewoman, who will come to Australia at the invitation of the Equestrian Federation to ride at the Royal Easter Show. May 20, 1954. (Photo by Daily Mali Contract Picture).