There is no need here to go over old, and well-trodden, ground; in my studies of the _Perceval_ Legend, and in the later popular _résumé_ of the evidence,[2] _The Quest of the Holy Grail_, I have analysed the texts, and shown that, while the poem of Chrétien de Troyes is our earliest surviving literary version, there is the strongest possible evidence that Chrétien, as he himself admits, was not inventing, but re-telling, an already popular tale.[3] The Grail Quest was a theme which had been treated not once nor twice, but of which numerous, and conflicting, versions were already current, and, when Wauchier de Denain undertook to complete Chrétien’s unfinished work, he drew largely upon these already existing forms, regardless of the fact that they not only contradicted the version they were ostensibly completing, but were impossible to harmonize with each other. It is of importance for our investigation, however, to note that where Wauchier does refer to a definite source, it is to an evidently important and already famous collection of tales, _Le Grant Conte_, comprising several ‘Branches,’ the hero of the collection being not Chrétien’s hero, Perceval, but Gawain, who, both in pseudo-historic and romantic tradition, is far more closely connected with the Arthurian legend, occupying, as he does, the traditional position of nephew, Sister’s Son, to the monarch who is the centre of the cycle; even as Cuchullinn is sister’s son to Conchobar, Diarmid to Finn, Tristan to Mark, and Roland to Charlemagne. In fact this relationship was so obviously required by tradition that we find Perceval figuring now as sister’s son to Arthur, now to the Grail King, according as the Arthurian, or the Grail, tradition dominates the story.[4] The actual existence of such a group of tales as those referred to by Wauchier derives confirmation from our surviving _Gawain_ poems, as well as from the references in the _Elucidation_, and on the evidence at our disposal I have ventured to suggest the hypothesis of a group of poems, dealing with the adventures of Gawain, his son, and brother, the _ensemble_ being originally known as _The Geste of Syr Gawayne_, a title which, in the inappropriate form _The Jest of Sir Gawain_, is preserved in the English version of that hero’s adventure with the sister of Brandelis.[5] So keen a critic as Dr Brugger has not hesitated to accept the theory of the existence of this _Geste_, and is of opinion that the German poem _Diû Crône_ may, in part at least, be derived from this source.