Board Thread:Spoilers!/@comment-24674051-20150626172312/@comment-24674051-20150626213358

Gwen, or Guin, are both just short versions of the name Guinevere, and are much easier to type. Most of us understand that Gwen (or Guin) is Guinevere. Just like most of us understand that Lance is Lancelot or Mal is Maleficent.

Her name on the show will be Guinevere.