Ben Davis is a U.S. based work clothing line. It was founded in San Francisco, CA by Ben Davis and his father, Simon Davis in 1935. Company founder, Benjamin Franklin Davis’ grandfather, Jacob Davis, was instrumental in the creation of the original Levi’s Jeans. Ben Davis Manufacturing was founded in 1935. The Davis family has been involved in the US garment industry since the mid 1800s. Company Founder, Ben Davis’, grandfather Jacob Davis was instrumental in the creation of the original Levi’s Jeans.