The Unseen Trust, Mary St. John, John Wayne's Essential Right Hand Mary St. John was far more than just John Wayne’s private secretary, she was the unsung cornerstone of his personal and professional life. Trusted with the intricate details of The Duke’s life, St. John managed everything from his business dealings to personal affairs with unmatched precision. Wayne’s lighthearted quip, “Tell Mary St. John, she’s the most interesting man I know,” wasn’t just a joke, it was a testament to the deep