What Was The Name of The Engine Driver

Smith, Jones and Robinson are the driver, fireman and guard on a train, but not necessarily in that order. The train carries three passengers, coincidentally with the same surnames, but identified with a “Mr”: Mr Jones, Mr Smith and Mr Robinson.

• Mr Robinson lives in Leeds.
• The guard lives halfway between Leeds and Sheffield.
• Mr Jones’s salary is £1,000 2s. 1d. per annum.
• Smith can beat the fireman at billiards.
•  The guard’s nearest neighbour (one of the passengers) earns exactly three times as much as the guard.
• The guard’s namesake lives in Sheffield.

What is the name of the engine driver?