CAMEO KIRBY (Fox, 1923), starring John Gilbert and Gertrude Olmstead.
According to Leatrice Gilbert Fountain, author of her father’s biography DARK STAR, CAMEO KIRBY caught the attention of Irving Thalberg at MGM. In 1924 Gilbert made his first film with MGM. It was called HIS HOUR.
This CAMEO KIRBY movie still inspired the setting of Chapter 23 of THE PRINCE IN THE TOWER, https://johngilbertandme.wordpress.com/the-prince-in-the-tower/.