From the Norman French form of the Welsh name Gwenhwyfar
, composed of the elements gwen
meaning "fair, white" and hwyfar
meaning "smooth". In Arthurian legend she was the beautiful wife of King Arthur
who engaged in an adulterous affair with Sir Lancelot
. According to Geoffrey of Monmouth, she was seduced by Mordred
before the battle of Camlann, which led to the deaths of both Mordred and Arthur.
The Cornish form of this name, Jennifer, has become popular in the English-speaking world.