Jack L. Warner Jack L. Warner Jack Leonard "J. L." Warner (August 2, 1892 – September 9, 1978), born Jacob Warner in London, Ontario, was a Jewish Canadian-American film executive who was the president and driving force behind the Warner Bros. Studios in Burbank, California. Warner's career spanned some 45 years, its duration surpassing that of any other of the seminal Hollywood studio moguls. As co-head of production at Warner Bros. Studios, he worked with his brother, Sam Warner, to procure the technology for the film industry's first talking picture. After Sam's death, Jack clashed with his surviving older brothers, Harry and Albert
Prince Albert Victor, Duke of Clarence and Avondale held liberal views, particularly on Irish Home Rule; and that his reputation was diminished by biographers eager to improve the image of his brother, George. The conspiracy theories surrounding Albert Victor have led to his portrayal in film as somehow responsible for or involved in the Jack the Ripper murders. Bob Clark's Sherlock Holmes mystery "Murder by Decree" was released in 1979 with "Duke of Clarence (Eddy)" played by Robin Marchal. "Jack the Ripper" was released in 1988 with Marc Culwick as Prince Albert Victor. Samuel West played "Prince Eddy" in "The Ripper" (1997), having previously played Albert Victor as