Gaheris

Gaheris appears in the late-12th-century Arthurian corpus (Chrétien de Troyes' poems) and is more fully developed in the early-13th-century Vulgate/Lancelot-Grail prose cycle as one of the sons of King Lot and Queen Morgause of Orkney. Medieval transmission shows that Gaheris and the figure known as Gareth/Guerehes derive from an older shared Welsh or proto-figure whose identity was split, conflated, or reallocated in continental and insular traditions; Malory's 15th-century Le Morte d'Arthur treats Gaheris as a distinct younger brother of Gawain and Agravain and an elder brother of Gareth.

Medieval summaries do not give a single consistent portrait. The Vulgate/Lancelot tradition characterizes Gaheriet as 'valiant, agile and handsome' and in one description notes an asymmetry ('his right arm longer than the left'); other sources vary or omit physical detail. Malory and later retellings standardize his name as Gaheris (gə-HERR-iss) but provide no full, uniform iconography in the provided materials.

Presented as a capable knight within the chivalric world, Gaheris performs feats of arms described in the Vulgate as 'almost as great as Sir Gawain had,' indicating high martial skill and agility without supernatural powers. Narratively he is reticent in speech, prone to excess when angered, and less disposed to self-promotion than Gawain. In Malory he commits the killing of his mother after finding her with Sir Lamorak and is later slain during Lancelot's rescue of Queen Guinevere—episodes depicted in the romances as contributing to the collapse of courtly order.