Gareth marupakan salah sabuting Ksatria Meja Bundar dalam legenda Arthurian. Inya adalah anak bungsu Raja Lot wan Ratu Morgause, nang jua adalah kakak tiri Raja Arthur, maulah inya kamanakan Arthur. Gareth jua adalah dingsanak Gawain, Agravain, wan Gaheris, wan ading atawa dingsanak tiri Mordred[note 1]. Dalam babarapa versi kisahnya, tarutama dalam Le Morte d'Arthur karya Sir Thomas Malory, Gareth baparan penting. Salah satu dari dalapan buku di dalam karya ngitu didedikasikan gasan sidin. Inya dipinandui lawan julukan "Beaumains", nang baarti "tangan nang indah" marga asal muasalnya nang rendah hati wan kaahlian dalam bagawi di dapur sabalum diakui sabagai ksatria.
Gareth dipinandui lawan loyalitasnya, baik hati, wan kaahliannya dalam partampuran, nang meulahnya mendapat wadah di méja bulat Raja Arthur. Salain itu, kisah-kisah tantang patualangannya manonjolkan kaharatan wan martabatnya sabagai ksatria sajati.
^An enumeration of the four brothers (excluding Mordred) can be found in Chrétien de Troyes's Perceval, the Story of the Grail when Gawain tells the "white-haired queen" (his grandmother Igraine) the names of the four brothers ("Gawain is the oldest, the second Agravain the Proud [...], Gaheriet and Guerehet are the names of the following two."[1] A brief portrait of the five brothers (including Mordred) can be found in the prose Lancelot.[2]
^Verses 8139–8142 in the Dufournet edition; verses 8056–8060 in the Méla edition.
^Norris J. Lacy, ed., Lancelot-Grail: Lancelot Parts III and IV, Volume 4 of Lancelot-Grail: The Old French Arthurian Vulgate and Post-Vulgate in Translation, Boydell & Brewer Ltd, 2010, pp. 392–4. ISBN9781843842354.
