A romance named for this hero, which contains a lengthy aside about a fanciful recipe for Greek fire, depicts his slaying of the pirate king Milocrates and the Persian giant Gormund. In that tale, this hero is dubbed the "Knight of the Surcoat" and raised under Pope Sulpicius, exemplifying a motif of unknown parentage named for this knight's son Le Bel Inconnu. This knight's wedding to a "loathly lady" (10[1])echoes the Wife of Bath's Tale, as he discovers that (-5[2])women most desire sovereignty over their husbands from Dame Ragnell. While astride his steed Gringolet, this knight bears (-5[1])a pentangle-emblazoned shield described in the second "fit" of a bob-and-wheel narrative. (10[2])A magic girdle protects this hero (10[1])when Sir Bertilak (10[1])nicks his neck. For 10 points, (10[1])name this Arthurian knight who engages in a beheading contest with the Green Knight. (10[1])■END■ (10[1]0[1])