Mordred or Modred (Welsh: Medraut, Medrod, etc.) is a character in the Arthurian legend, known as a notorious traitor who fought King Arthur at the Battle of Camlann, where he was killed and Arthur fatally wounded.

Tradition varies on his relationship to King Arthur, but he is best known today as Arthur's illegitimate son by his half-sister Morgause.

In earlier literature, he was considered the legitimate son of Morgause, also known as Anna, with her husband King Lot of Orkney. His brothers or half-brothers are Gawain, Agravain, Gaheris, and Gareth.

The illegitimacy angle was introduced in the Lancelot-Grail or Vulgate Cycle, and has been taken up in most subsequent versions. In those versions, the incest is usually accidental; the participants are ignorant of their kinship.

In one version Morgause mistakes King Arthur for her husband visiting her in the night. In another Arthur rapes his sister, overtaken by lust for her. In any case, the discovery of the incest is usually disastrous; after hearing a prophecy that a child born on May Day, as Mordred was, will destroy him and his kingdom, Arthur rounds up all the noble May Babies and sends them away on a rickety ship. The ship sinks, and the only child to survive is Mordred, who is rescued and eventually returned to his parents.

Mordred in Arthurian Legend
Mordred appears very early in Arthurian literature. The first mention of him, as Medraut, occurs in the Annales Cambriae entry for the year 537:
 

"The Strife (Battle) of Camlann; in which Arthur and Medraut fell."

The Annales Cambriae themselves were completed between 960 and 970, though their authors drew on older material. Mordred was associated with the Battle of Camlann even at that early date. Leslie Alcock points out this brief entry gives no information as to whether he killed or was killed by King Arthur, or even if he was fighting against him; the reader assumes this in the light of later tradition. But even if he was not the notorious villain he would later become, his appearances in the Welsh Triads and genealogies show he was at least a well known personage.
 

The earliest full account of Mordred is found in Geoffrey of Monmouth's Historia Regum Britanniae, where he debuts already in his villainous role.

Geoffrey introduces the figure of Mordred to the world beyond Wales. King Arthur leaves Mordred in charge of his throne as he crossed the English Channel to wage war on Emperor Lucius of Rome. During King Arthur's absence Mordred crowns himself king and marries Guinevere, forcing Arthur to return to Britain. The Battle of Camlann is fought, and Mordred dies, while Arthur is taken across the waters to the Isle of Avalon. Arthur's successor, Constantine III of Britain, has to deal with the remainder of Mordred's army, led by his two sons.

A number of Welsh sources also refer to Medraut, usually in relation to the Battle of Camlann.

One triad, based on Geoffrey of Monmouth's Historia Regum Britanniae, provides an account of his betrayal of King Arthur; in another, he is described as the author of one of the "Three Unrestrained Ravagings of the Isle of Britain". In this story he came to King Arthur's court at Kelliwic in Cornwall, devoured all of the food and drink, and even dragged Gwenhwyfar (Guinevere) from her throne and beat her.

Medraut is never considered King Arthur's son in Welsh texts, only his nephew, though The Dream of Rhonabwy mentions that the king had been his foster father.

However, Mordred's later characterization as King Arthur's villainous son has a precedent in the figure of Amr, a son of Arthur's known from only two references. The more important of these, found in an appendix to the Historia Britonum, describes his marvellous grave beside the Herefordshire spring where he had been slain by his own father in some unchronicled tragedy. What connection exists between the stories of Amr and Mordred, if there is one, has never been satisfactorily explained.

In Geoffrey of Monmouth and certain other sources such as the Alliterative Morte Arthure, Mordred marries Guinevere, seemingly consensually, after he steals the throne. However, in later writings like the Lancelot-Grail or Vulgate Cycle and Thomas Malory's Le Morte d'Arthur, Guinevere is not treated as a traitor and she flees Mordred's proposal and hides in the Tower of London. Adultery is still tied to her role in these later romances, however, but Mordred has been replaced with Lancelot.

Geoffrey of Monmouth and the Lancelot-Grail or Vulgate Cycle have Mordred being succeeded by his two sons. In Geoffrey, Arthur's successor Constantine tracks them down and kills them in their sanctuaries; in the Lancelot-Grail or Vulgate Cycle, the elder son, Melehan, is killed by Bors, while Lancelot slays his brother.


Virtually everywhere Mordred appears, his name is synonymous with treachery, a fate shared by Ganelon from the Song of Roland.

A few works of the Middle Ages and today, however, portray Mordred as less a traitor and more a conflicted opportunist, or even a victim of fate.

The 14th century Scottish chronicler John of Fordun even claimed that Mordred was the rightful heir to the throne of Britain, as Arthur was an illegitimate child (in his account, Mordred was the legitimate son of Lot and Anna.) This sentiment was elaborated upon by Walter Bower and by Hector Boece, who in his Historia Gentis Scotorum goes so far as to say Arthur and Gawain were traitors and villains who stole the throne from Mordred.

Some modern Arthurian literature such as Marion Zimmer Bradley's Mists of Avalon have Morgause's sister Morgan le Fay as Mordred's mother. Mordred remains a major villain in many modern takes on the legend, including John Boorman's film Excalibur, T.H. White's novel The Once and Future King (where Mordred plays the role of a bitter but successful populist and faux-Bolshevik) and Hal Foster's popular comic strip Prince Valiant.

Other works treat the character differently. The Victorian poet George Augustus Simcox wrote a poem titled Mordred My Master from the perspective of Mordred's dog.

Mary Stewart's The Wicked Day is told from his perspective and portrays him more sympathetically than usual, as a victim of fate and the machinations of his mother, whom Stewart identifies as Morgause, illegitimate daughter of Uther.

Elizabeth Wein's The Winter Prince portrays him similarly, as a conflicted young man doomed by his mother's manipulations and his own jealousy of his legitimate half-brother Lleu.

In Bernard Cornwell's The Warlord Chronicles, Mordred is the legitimate grandson and heir of Uther Pendragon, and Arthur serves as the kingdom's regent during his minority.

In Stephen R. Lawhead's Pendragon Cycle, Medraut is even half-Atlantean (as is Myrddin), since Lawhead makes his mother Morgian (here Myrddin's aunt) a refugee from Atlantis.

In Vivian Vande Velde's The Book of Mordred, Mordred is portrayed as the protagonist of the story, killing an evil wizard and saving a telepathic girl, her mother, and a witch named Nimue, who was Merlin's student.

Similarly, Douglas Clegg's Mordred, Bastard Son portrays the character as not only sympathetic but heroic (he and Lancelot save Guinevere from a murderous plot), and in a new twist, he is Lancelot's lover.

In Jack Whyte's Camulod Chronicles Mordred is the illegitimate son of Arthur, but is a good son who is not treacherous and is unjustly blamed for his father's fall in rumours after the fact.

In the the book Here, There Be Dragons by James A. Owen, Mordred is the real name of the Winter King who plagued "The Archipelago", a world that resembles a combination of a multitude of usually famous, real literary works.