Gawain ( GA(H)-wayn, -win, gə-WAYN), also known in many other forms and spellings, is a character in Arthurian legend, in which he is King Arthur's nephew and one of the premier Knights of the Round Table. The prototype of Gawain is mentioned under the name Gwalchmei in the earliest Welsh sources. He has subsequently appeared in many Arthurian tales in Welsh, Latin, French, English, Scottish, Dutch, German, Spanish, and Italian, notably as the protagonist of the Middle English poem Sir Gawain and the Green Knight. Other works featuring Gawain as their central character include De Ortu Waluuanii, Diu Crône, Ywain and Gawain, Golagros and Gawane, Sir Gawain and the Carle of Carlisle, L'âtre périlleux, La Mule sans frein, La Vengeance Raguidel, Le Chevalier à l'épée, Le Livre d'Artus, The Awntyrs off Arthure, The Greene Knight, and The Weddynge of Syr Gawen and Dame Ragnell.
In Arthurian chivalric romance literature, Gawain is usually depicted as King Arthur's closest companion and an integral member of the elite Round Table. In the best-known versions of the legend, he is the son of Arthur's sister Morgause and King Lot of Orkney and Lothian. Here, his younger brothers (or half-brothers) are Agravain, Gaheris, Gareth, and the infamous Mordred. However, his familial relations and upbringing are recorded differently in various accounts, although they often involve a story of Gawain unknowingly being raised in foster care in Rome before returning to Britain to reunite happily with his biological relatives. His many children from his numerous wives and lovers include the "Fair Unknown" Gingalain, himself a popular hero of Arthurian romance.
