From In Old Santa Fe (1934) and all through the television years, songwriter/steel guitarist Frankie Marvin (born Frank James Marvin) was a highly visible member of Gene Autry's onscreen coterie. Marvin, who had earlier performed with Autry on radio, would occasionally play a minor role as well, often as Gene's foreman, a ranch hand, or a cowboy. He would even join the bad guys in non-Autry vehicles such as the 1941 serial Adventures of Red Ryder, in which he attempted to poison the Circle R's water supply. In all, Marvin appeared in more than 80 feature Westerns and at least six serials.