Did both Pedro Sienna and Irving Cummings direct movies?
Irving Cummings Irving Camisky (October 9, 1888 – April 18, 1959) was an American movie actor, director, producer and writer.
Equus (film) Equus is a 1977 British-U.S. drama film directed by Sidney Lumet and written by Peter Shaffer, based on his play of the same name. The film stars Richard Burton, Peter Firth, Colin Blakely, Joan Plowright, Eileen Atkins, and Jenny Agutter. The story concerns a psychiatrist treating a teenager who has blinded horses in a stable, attempting to find the root of his horse worship.