The Power of Right is a 1919 British silent war film directed by Floyd Martin Thornton and starring James Knight, Evelyn Boucher and Frank Petley. The film had strong similarities to The Warrior Strain also featuring the Prince of Wales and directed by Thornton.
As summarized in a film publication, Toni (Boucher) and her brother Fane (Thatcher) were adopted after the death of their father by their Uncle Charles (Cullin), and brought from the slums to the uncle's beautiful home, much to the disgust of the uncle's wife Lady Henrietta (De Winton). Fane is placed in a boys academy while Toni is sent to a convent. Fane turns out to be a haughty young Englishman while Toni cannot understand the changes in her brother. Lady Henrietta has had him raised to suit herself. Toni is then placed in a finishing school and, after she is expelled for going outside the walls, Lady Henrietta threatens to place her in a Dutch school where she would be punished for such a misdemeanor. Toni tells her troubles to Lord Robert Wyke, Lady Henrietta's brother who is kindly and devoted to Toni. He is secretly in love with Toni, but is not free to tell her because of a hastily and unfortunate marriage to an adventuress. After Robert is compelled to leave for business and Toni hears that she will be sent to the Dutch school, the girl follows Robert to Florence where she remains with the housekeeper of Count de Soulnes. Word arrives that Robert has been murdered, but later he arrives and it turns that his wife was killed in an automobile accident, leaving him free to marry Toni.