from The Century Dictionary.
- noun An elected officer of a town, charged with the duty of preventing wandering cattle from doing damage, and of impounding strays; a hayward.
Sorry, no etymologies found.
The most important person among them was the "head field-driver," who held that position on account of his superior intelligence and fidelity.
Jack in the Forecastle or, Incidents in the Early Life of Hawser Martingale John Sherburne Sleeper
The field-driver takes stray animals to the pound, and then notifies their owner; or if he does not know who is the owner he posts a description of the animals in some such place as the village store or tavern, or has it published in the nearest country newspaper.
There was once a case before him for a field-driver who had impounded cattle under the old Massachusetts law.
Autobiography of Seventy Years, Vol. 1-2 George Frisbie Hoar 1865