A coach driver, or coachman, is the guy who drives a buggy, carriage, wagon or hansom and commands the actions of the horses leading it. Since travel by carriage is not really a modern convenience any longer, most films involving coachmen are period pieces, usually of the western genre.
Black Cat, The: A coach driver brought newlyweds Peter and Joan Alison, as well as Doctor Vitus Werdegast across the rough terrain of Hungary. A violent rain storm spooked the horses, causing the carriage to go off the road. The driver was killed in the accident.
Bram Stoker's Dracula: The coach driver that brought Jonathan Harker across the Borgo Pass to Castle Dracula was not entirely human. He wore a large helmet that covered his entire face, and was able to stretch his arm beyond physical norms to guide Harker into the coach. It is possible that this may have been Dracula himself, though his identity was never revealed.