Cassidy had been created by Clarence Mulford, writer of formula western novels and pulpy short stories. In the stories, Cassidy was a snorting, drinking, chewing relic of the Old West. Harry Sherman changed all that when he bought the character for the movies. Sherman hired Boyd, a veteran of the silent screen whose star had faded, to play a badman in the original film. But Boyd seemed more heroic, and Sherman switched the parts before the filming began. As Cassidy, Boyd became a knight of the range, a man of morals who helped ladies cross the street but never stooped to kiss the heroine. He was literally black and white, his silver hair a vivid contrast to his black getup. He did not smoke, believed absolutely in justice, honor, and fair play, and refused to touch liquor. Boyd's personal life was not so noble. Born in Ohio in 1898, he had arrived in Hollywood for the first golden age, working with Cecil B. DeMille in a succession of early silents. By the mid-1920s he was a major star. Wine, women, and money were his: he drank and gambled, owned estates, married five times. But it all ended when another actor named William Boyd was arrested for possession of whiskey and gambling equipment.