Pounders

Someone who impounds animals, seizing stray animals and putting them in some kind of an enclosure.

"So we might go on from court to court, for there were few held at which he did not figure, and we can follow much of the manorial arrangements as we watch him breaking the laws of the manor, trespassing on his neighbour's land or despoiling their property. He is found putting more animals on the village common than he was entitled to do, or taking away his beasts from the pound wherein they have been enclosed by the village pounder because of some breach of the manorial regulations. He constantly encroached on his neighbours' holdings, thus reaping oats or cutting hay that was theirs, or causing trouble to others by failing to clean out his ditches. The bailiff accused him of stealing parts of a cart and also of assault on one occasion, and other tenants evidently found that he was no respecter of property and were constantly making accusations against him."

Six Medieval Men & Women, "Richard Bradwater," H. S. Bennett (1955).