Derived from Middle English parrock meaning "paddock, small enclosure", hence a topographic name for a dweller by a paddock or an enclosed meadow. It could also be a nickname for a person who resembled a toad or frog in some way (derived from Middle English paddock meaning "toad, frog"), or denote a person hailing from one of the many places in England that bear this name, for example the town and civil parish of Paddock Wood in Kent.