In the 15th - century Middle Cornish play Bewnans Ke , she was called Gwynnever .
The name is given as Guennuuar in Caradoc 's Vita Gildae , while Gerald of Wales refers to her as Wenneuereia .
In the 15th - century Middle Cornish play Bewnans Ke , Guennuuar was called Gwynnever .
The name is given as Guennuuar in Caradoc 's Vita Gildae , while Gerald of Wales refers to her as Wenneuereia .