Guinevere ruled as Queen.
Guinevere ( [ ˈɡwɪnᵻvɪər ] Gwenhwyfar Gwenivar ) , often written as Guenevere or Gwenevere , is , in Arthurian legend , the wife of King Arthur . In medieval romances , one of the most prominent story arcs is Queen Guinevere 's love affair with her husband 's chief knight , Lancelot .