A variation of Perceval, used in the thirteenth-century French Perlesvaus. The author relates that the name signifies "he who has lost the vales", because his fatherís land, the vale and castle of Camelot, was invaded and conquered by the Lord of the Fens.

This alternate form of Percevalís name confused some later authors, and both Perceval and "Pellesvaus" consequently appear in the romance of Escanor.