Two entries with the name Kardeiz.
Kardeiz
In Wolfram, Perceval’s son by the lady Condwiramurs (Kondviramur). He was the twin brother of Loherangrin. Kardeiz was tutored in his youth by Duke Kyot of Katelangen.
Kardeiz inherited Perceval’s secular lands of Brobarz, Anjou, Wales, and North Wales while Loherangrin became the new Grail King.
Source
Parzival | Wolfram von Eschenbach, 1200–1210
Kardeiz
Brother of Condwiramurs, Perceval’s wife. He was the son of Tampenteire. He was killed for the love of a lady.
Source
Parzival | Wolfram von Eschenbach, 1200–1210