He receives three kisses from Lady
His son is known by the epithet "The Fair Unknown;" that son, Gingalain, sacrifices his love for a tournament.  He is the son of King Lot of Orkney, and is often called ‘courteous'.  In one poem, he gets information on what women most desire after he marries Dame Ragnelle. He receives three kisses from Lady [*] Bercilak, who gives this man a girdle preventing injury, before he goes to a chapel and faces his axe-wielding nemesis. For 10 points, name this Knight of the Round Table, a nephew of King Arthur who goes on a quest to defeat the Green Knight.
His son is known by the epithet "The Fair Unknown;" that son, Gingalain, sacrifices his love for a tournament.  
Sir {Gawain} [accept {Gawan}, {Gavan}, {Gauvain}, {Gwalchmei}, or {Walewein} from annoying people]