Rex Ingram, the forgotten Irish director who helped shape Hollywood

'The Four Horsemen of the Apocalypse' (1920) involved a cast and crew of 12,000

Rex Ingram directing Rudolph Valentino  in the MGM film ‘The Four Horsemen of the Apocalypse’. Photograph: Hulton Archive/Getty Images
Rex Ingram directing Rudolph Valentino in the MGM film ‘The Four Horsemen of the Apocalypse’. Photograph: Hulton Archive/Getty Images