Percival

I thought the name was from the Arabic parsi fal -wise fool -Wagner used Parsifal in his opera about the Holy Grail where the prophecy was that only a wise fool could redeem Montsalvat from its corruption.

In Wolfram von Eschenbach's Percival epic, the Arthurian hero got the name Percival because he was born very shortly after the news of his father's death reached his mother, who felt like the pain caused by sorrow was piercing right through her. Thus the name Percival, "to pierce the valley".