Now universally taken as a pet form of Jennifer. In fact, this name existed during the Middle Ages as a pet form of Jean. It is often used independently. Among many well-known bearers are the Swedish soprano Jenny Lind (originally Johanna Lind, 1820–87), the British racehorse trainer Jenny Pitman (b. 1946), and the British actress Jenny Agutter (b. 1952).
English: habitational name from either of two places called Whetstone, in Leicestershire and Greater London (formerly in Middlesex), or from Wheston in Derbyshire. All are named with Old English hwetstān ‘whetstone’ and are sited in areas that provided stone suitable for whetstones, stones used to sharpen knives and blades.