Vulgate Cycle in the context of Logres

Gawain (/ˈɡɑːweɪn, ˈɡæ-, -wɪn, ɡəˈweɪn/ 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.

Agravain or Agravaine (/ˈæɡrəveɪn/ AG-rə-vain) is a Knight of the Round Table in Arthurian legend, whose first known appearance is in the works of Chrétien de Troyes. He is the second eldest son of King Lot of Orkney with one of King Arthur's sisters known as Anna or Morgause, thus nephew of King Arthur, and brother to Sir Gawain, Gaheris, and Gareth, as well as half-brother to Mordred.

Agravain secretly makes attempts on the life of his hated brother Gaheris starting in the Vulgate Cycle, participates in the slayings of Lamorak and Palamedes in the Post-Vulgate Cycle, and murders Dinadan in the Prose Tristan. In the French prose cycle tradition included in Thomas Malory's Le Morte d'Arthur, together with Mordred, he then plays a leading role by exposing his aunt Guinevere's affair with Lancelot, which leads to his death at Lancelot's hand.

Ban of Benoic /ˈbæn/ (Old French: Ban de Bénoïc) is a character in Arthurian legend. King Ban first appeared by this name in the Lancelot propre part of the 13th-century French Vulgate Cycle as the ruler of the realm in France named Benoic (fr) (Bénoïc; alternatively Benewic, Benoich, Benoit, Benuic, Benwick) and father of Sir Lancelot and Sir Hector de Maris, as well as brother of King Bors. Ban of Benoic largely corresponds to the other versions of the father of Lancelot, including Pant of Gen[n]ewis in the German Lanzelet, Haud of Schuwake in the English Sir Lancelot du Lake, and Domolot of Lokva in the Belarusian Povest' o Tryshchane (be).

Elaine, also known under many other names and identified as the "Grail Maiden" or the "Grail Bearer", is a character from Arthurian legend. In the Arthurian chivalric romance tradition from the Vulgate Cycle, she is a princess of Corbenic and the mother of Galahad by Lancelot. Due to magical spells, she beds Lancelot, whom she loves, resulting in the conception of Galahad. Then, later—also through magic and deception—Lancelot sleeps with her again, thinking she is Queen Guinevere. This leads to Lancelot's descent into madness, until he is eventually cured by her using the Grail and then lives with her for a time being. She should not be confused with Elaine of Astolat, a different woman who too fell in love with Lancelot.

The Post-Vulgate Cycle, also known as the Post-Vulgate Arthuriad, the Post-Vulgate Roman du Graal (Romance of the Grail) or the Pseudo-Robert de Boron Cycle, is one of the major Old French prose cycles of Arthurian literature from the early 13th century. It is considered essentially a rewriting of the earlier and more popular Vulgate Cycle (also known as the Lancelot-Grail cycle), with much left out but also much added, including characters and scenes from the Prose Tristan. The cycle did not survive in its entire original form, but has been reconstructed from fragments in several medieval languages.