Having reminded Gawain of the appointed time, the Green Knight rides off. In his struggles to keep his bargain, Gawain sets off on his search. His honour is called into question several times. Gawain avoids several trials on his way. Finally he meets the Lady Bertilak, who tries to seduce him. He avoids this, but accepts a gift from her. He is bound to give the gift back to his host (who actually is the Green Knight in another form). When the day comes for the Green Knight to strike, Gawain kneels... When the Green Knight strikes, he nicks Gawain's neck, but otherwise Gawain is unhurt. The Green Knight explains that the nick is payment for Gawain's only fault, keeping the small gift.
Not all scholars accept the gwalch derivation. Celticist John Koch suggests the name could be derived from a Brythonic original *Wolcos Magesos , "Wolf/Errant Warrior of the Plain."  Others argue that the continental forms do not ultimately derive from Gwalchmei . Medievalist Roger Sherman Loomis suggests a derivation from the epithet Gwallt Avwyn , found in the list of heroes in Culhwch and Olwen , which he translates as "hair like reins" or "bright hair".   Dutch scholar Lauran Toorians proposes that the Dutch name Walewein (attested in Flanders and Northern France c. 1100) was earliest, suggesting it entered Britain during the large settlement of Flemings in Wales in the early 12th century.  However, most scholarship supports a derivation from Gwalchmei, variants of which are well attested in Wales and Brittany. Scholars such as Bromwich, Joseph Loth, and Heinrich Zimmer trace the etymology of the continental versions to a corruption of the Breton form of the name, Walcmoei .