I don't know that either McLintock! or The Quiet Man were "spanking movies" per se, but they certainly raised the collective antennae of those of us who are "in the scene". Also, they were very much "mainstream" and could be enjoyed without anyone getting suspicious of our inclinations, if one were worried about that. As I recall, the Duke never spanked her in The Quiet Man, but the threat was there, including one scene where a local woman gave Wayne "a stick to beat the lovely lady with."

That aside, she was truly a lovely lady and beautiful (and sexy) to boot. Her first role was as Esmeralda opposite Charles Laughton in "The Hunchback of Notre Dame". She was eighteen and never lovelier. She remained "a lovely lady" for the rest of her life, and a pretty damned good actress, even though she was never really challenged in most of her roles. She was a movie star, pure and simple.
Requiescat in pace, lovely lady...