Modern coinage from the Scottish word glen ‘valley’ (Gaelic gleann), in some cases perhaps representing a transferred use of the surname derived from this word. In recent years it has been used far beyond Scotland as a given name. Among well-known bearers of the name is the U.S. country singer Glen Campbell (b. 1936). There has been some confusion with the Welsh name Glyn, which has the same meaning.
English: 1. nickname from Middle English gorrell ‘fat man’ (from Old French gorel ‘pig’). 2. from the Old English personal name Gārwulf, composed of the elements gār ‘spear’ + wulf ‘wolf’. 3. habitational name from any of various places named with Old English gor ‘dirt’, ‘mud’ + wella ‘spring’, ‘stream’, such as Gorwell in Essex and Dorset, or Gorrell in Devon.