Gawain, spelled in many ways, is one of the Knights of the Round Table in the Arthurian legendary cycle. The prototype of Gawain appears under the name Gwalchmei in the earliest Welsh sources. He has
Sir Gawaine the Son of Lot, King of Orkney, by Howard Pyle from The Story of King Arthur and His Knights (1903)
Gauvain's attributed arms
Galvagin (Gawain) depicted fighting Carrado (Carados) on the Italian Modena Archivolt (c. 1120–1240)
Gawain unwittingly fights Yvain in the Garrett MS. No. 125 manuscript of Chrétien's Knight of the Lion (c. 1295)
Gareth of Orkney is a Knight of the Round Table in the Le Morte d'Arthur version of the Arthurian legend and many modern works based on it. He is depicted as the youngest son of King Lot and the Queen
"The lady Lyoness [...] had his [Gareth's] dwarf in examination." N. C. Wyeth's illustration of her and Melot in The Boy's King Arthur (1922)
Gareth and Lynette by Julia Margaret Cameron (1874)