William was in attendance with John in Normandy at the time of Arthur of Brittany's imprisonment and it was alleged that Arthur suffered the same fate as the Welsh princes at William's hand, although this has never been proven.
William was in attendance with John in Normandy at the time of Arthur of Brittany's imprisonment. Arthur suffered the same fate as the Welsh princes at William's hand. This was what it was alleged. This has never been proven. This was what it was alleged.