Happy Birthdate, Art Acord!
Silent film cowboy/actor Art Acord was born on April 17, 1890. He had a very serious accident while working for the "Flying A" in Santa Barbara, according to this article. He did make more movies, and lived until 1931, so perhaps this article is another example of "movie-magazine malarkey."
"Acord's part called for him to ride down a steep slope among boulders and through thick underbrush. At one of the most perilous points, the horse lost its footing and fell sideways down the incline. Feeling the horse going, Acord attempted to spring off on the upside. One of his spurs caught in a worn cinch, and he was dragged after the rolling, pitching, struggling horse. Before the animal could regain its feet, it had rolled over the rider inflicting severe internal injuries." – Moving Picture World, June 17, 1916