Le Morte d’Arthur · Theme
Betrayal and Treachery
How Le Morte d’Arthur develops Betrayal and Treachery.
Betrayal is a central force driving the narrative, from Mordred's usurpation and attempted marriage to Guenever, to the treachery of Morgan le Fay and the fatal conflicts among knights like Balin and Balan.
Where it surfaces
- Le Morte d'Arthur
Mordred's usurpation of the throne and seizure of Guenever represent the ultimate betrayal of Arthur's trust and kingdom.
- How Uther Pendragon Made War on the Duke of Cornwall
Uther's deception of Igraine, though orchestrated by Merlin, constitutes a betrayal of trust and marital bonds.
- How King Arthur held in Wales, at a Pentecost, a great feast, and what kings and lords came to his feast.
The kings attend Arthur's feast under pretense of love but reveal their true intent to overthrow him, a form of betrayal.
- How Eleven Kings Gathered a Great Host Against King Arthur
The kings swear an oath to destroy Arthur, turning against their sovereign and forming a rebellion.
- How King Pellinore Took Arthur's Horse and Followed the Questing Beast, and How Merlin Met with Arthur
The prophecy of a child born of incest who will destroy Arthur foreshadows future betrayal and treachery within the kingdom.
- How all the children were sent for that were born on May-day, and how Mordred was saved
The seeds of Mordred's future betrayal are sown here, as the king's attempt to eliminate a threat inadvertently preserves it.
- How Merlin told the adventure of this damosel
The damosel's falsehood and her plot for vengeance against her own brother exemplify treachery.
- VIII
Merlin hints at future betrayal when he tells King Mark that when Tristram is taken with his sovereign lady, Mark will hear tidings that shall not please him.
- The Battle Against Nero and King Lot
Arthur's affair with Lot's wife and Merlin's deception of Lot illustrate personal and political betrayals.
- Of the interment of twelve kings, and of the prophecy of Merlin, and how Balin should give the dolorous stroke
Morgan le Fay betrays Arthur's trust by giving the scabbard of Excalibur to her lover Accolon, plotting her brother's death.
- How on the way he heard two knights, as he lay by night in a valley, and of their adventures.
A plot to poison King Arthur by a trusted friend near him, revealing deep treachery within the court.
- How Merlin was assotted and doted on one of the ladies of the lake, and how he was shut in a rock under a stone and there died.
Nimue tricks Merlin into revealing his secrets and then traps him.
- How King Arthur, King Uriens, and Sir Accolon of Gaul, chased an hart, and of their marvellous adventures
Morgan le Fay's implied role in the enchantment hints at betrayal.
- How Arthur took upon him to fight to be delivered out of prison, and also for to deliver twenty knights that were in prison
Sir Damas is described as false and full of treason, and the damosel's secret allegiance to Morgan le Fay introduces an element of deceit.
- How Accolon found himself by a well, and he took upon him to do battle against Arthur
Morgan le Fay betrays Arthur by sending him a counterfeit sword while arming Accolon with the true Excalibur.
- Of the battle between King Arthur and Accolon
Morgan le Fay's plot to have Arthur killed by swapping his sword with a false one.
- How King Arthur recovered Excalibur and overcame Sir Accolon
Accolon's treason and Morgan le Fay's enchantment set Arthur at a deadly disadvantage.
- How Accolon Confessed the Treason of Morgan le Fay
Morgan le Fay's plot to kill her brother King Arthur and marry Accolon exemplifies deep familial betrayal.
- How Arthur accorded the two brethren, and delivered the twenty knights, and how Sir Accolon died
Arthur reveals that his own sword was stolen by treason and that the battle was arranged to kill him, highlighting the theme of betrayal.
- How Morgan would have slain Sir Uriens her husband, and how Sir Uwaine her son saved him
Morgan le Fay attempts to murder her own husband, King Uriens, in his sleep.
- How Queen Morgan le Fay made great sorrow for the death of Accolon, and how she stole away the scabbard from Arthur
Morgan le Fay deceives her brother Arthur and steals his scabbard, an act of familial betrayal.
- How Morgan le Fay saved a knight that should have been drowned, and how King Arthur returned home again.
Morgan le Fay's gift of a mantle to Arthur is a veiled act of treachery, as she seeks to harm him despite appearing to offer reconciliation.
- How the Damosel of the Lake saved King Arthur from mantle that should have burnt him
Morgan le Fay's attempt to kill Arthur with a poisoned mantle exemplifies familial betrayal.
- How Sir Gawaine came to the Lady Ettard, and how Sir Pelleas found them sleeping
Sir Gawaine betrays Sir Pelleas by breaking his oath and sleeping with Lady Ettard, whom Pelleas loved.
- How Sir Pelleas loved no more Ettard by means of the Damosel of the Lake, whom he loved ever after
Ettard's despite and shame toward Pelleas leads to his despair and eventual rejection of her
- Book V
King Mark's repeated betrayals of Tristram, including attempts on his life.
- How Four Queens Found Launcelot Sleeping
Morgan le Fay uses enchantment to trap Launcelot, betraying her brother King Arthur's knight.
- How Sir Launcelot was delivered by the mean of a damosel
The queen-sorceresses imprison Launcelot out of spite for refusing their love, illustrating treachery.
- How Sir Launcelot was received of King Bagdemagus' daughter, and how he made his complaint to her father.
Launcelot's complaint about being betrayed and separated from his brother Sir Lionel underscores the theme of treachery among knights.
- How Sir Launcelot at the request of a lady recovered a falcon, by which he was deceived
The lady and her husband Sir Phelot conspire to trap and kill Launcelot under false pretenses.
- How Sir Launcelot Overtook a Knight Which Chased His Wife to Have Slain Her
Sir Pedivere's deceitful murder of his wife after feigning submission to Launcelot exemplifies betrayal.
- Book VIII
King Mark's jealousy leads to plots against Tristram, including attempted murder and exile, highlighting the destructive nature of betrayal.
- How the Stepmother of Sir Tristram Had Ordained Poison for to Have Poisoned Sir Tristram
The stepmother's plot to poison Tristram to secure her children's inheritance exemplifies domestic treachery within the royal household.
- How the queen espied that Sir Tristram had slain her brother Sir Marhaus by his sword, and in what jeopardy he was.
The queen's attempt to kill Tristram in his bath is a treacherous act, though motivated by vengeance for her brother.
- How Sir Tristram and King Mark hurted each other for the love of a knight's wife
King Mark betrays his nephew Tristram by ambushing him, and the dwarf is forced to reveal the secret message under duress.
- How Sir Tristram lay with the lady, and how her husband fought with Sir Tristram
The lady betrays her husband by harboring Tristram, and King Mark's feigned kindness hides his true enmity.
- How King Mark sent Sir Tristram for La Beale Isoud toward Ireland, and how by fortune he arrived into England
King Mark feigns trust in Sir Tristram by sending him on a mission for La Beale Isoud, but secretly intends for Tristram to be killed, exemplifying betrayal within family bonds.
- How Sir Tristram demanded La Beale Isoud for King Mark, and how Sir Tristram and Isoud drank the love drink.
Tristram's promise to King Mark is undermined by the unintended love potion, setting the stage for future betrayal.
- Of the Wedding of King Mark to La Beale Isoud
Two ladies of the queen's court plot to murder Dame Bragwaine out of envy and hate.
- The Abduction of Queen Isoud
Palomides exploits Isoud's promise to seize her, a form of betrayal of trust.
- How Sir Tristram brought Queen Isoud home, and of the debate of King Mark and Sir Tristram
Sir Andred spies on Tristram and Isoud, attempting to slander them and provoke King Mark's wrath.
- XXXIV
Sir Andred betrays his kinsman Tristram by capturing him with Isoud and seeking his death.
- How Sir Suppinabiles told Sir Tristram how he was defamed in the court of King Arthur, and of Sir Lamorak.
Sir Tristram is defamed as a false knight by Sir Launcelot, and his marriage to the king's daughter of Brittany is seen as a betrayal of La Beale Isoud.
- Book IX
King Mark's jealousy and plots against Tristram exemplify betrayal within the court.
- How King Arthur was brought into the Forest Perilous, and how Sir Tristram saved his life
Lady Annowre's deceitful plot to seduce and then murder Arthur exemplifies treachery against the king.
- How Sir Tristram came to La Beale Isoud, and how Kehydius began to love Beale Isoud, and of a letter that Tristram found
Tristram accuses Isoud of treachery for corresponding with Kehydius, and Kehydius's leap from the window involves deception to avoid punishment.
- The False Report of Tristram's Death
Sir Andred's deceitful rumor to claim Tristram's lands exemplifies betrayal within the court.
- How King Mark found Sir Tristram naked, and made him to be borne home to Tintagil, and how he was there known by a brachet.
King Mark's potential betrayal of Tristram is foreshadowed, as Isoud predicts he will banish or destroy Tristram once discovered.
- How King Mark Banished Sir Tristram
King Mark's ingratitude and banishment of Tristram despite his many services.
- How a damosel sought help to help Sir Launcelot against thirty knights, and how Sir Tristram fought with them
Queen Morgan le Fay's plot to ambush Sir Launcelot with thirty knights exemplifies courtly treachery.
- How Sir Tristram jousted with Sir Kay and Sir Sagramore le Desirous, and how Sir Gawaine turned Sir Tristram from Morgan le Fay
Morgan le Fay's plot to trap Tristram and Launcelot using deceitful ladies exemplifies the theme of betrayal, condemned by Gawaine as false treason.
- How Sir Tristram and Sir Gawaine rode to have foughten with the thirty knights, but they durst not come out
Morgan le Fay's ambush of thirty knights set to waylay Sir Launcelot and Sir Tristram exemplifies the treachery among the nobility.
- How Sir Tristram found Palomides by a well, and brought him with him to his lodging
Palomides accuses Sir Bors and Sir Ector of defoiling him with falsehood and treason, highlighting the theme of treachery among knights.
- How King Mark was sorry for the good renown of Sir Tristram
King Mark's ambush of Sir Uwaine exemplifies treachery, as he attacks a knight who was not aware of him, violating knightly honor.
- XXXIX
King Mark's feigned hospitality and midnight ambush exemplify his persistent treachery against knights of the Round Table.
- XL
Sir Dinas's paramour betrays him by fleeing with another knight, leading to a violent confrontation and Dinas's refusal to trust her again.
- How Sir Dinadan rescued a lady from Sir Breuse Saunce Pité, and how Sir Tristram received a shield of Morgan le Fay.
Morgan le Fay designs a shield to betray Sir Launcelot's secret love for Queen Guenever, aiming to cause discord between King Arthur and his queen.
- How Sir Tristram took with him the shield, and also how he slew the paramour of Morgan le Fay.
Morgan le Fay's paramour acts against her advice, and the shield given by Morgan may carry hidden intent.
- How Sir Tristram at a tournament bare the shield that Morgan le Fay delivered to him
Morgan le Fay's shield is designed to expose perceived shame and dishonor, threatening the queen and sowing discord.
- How for the despite of Sir Tristram King Mark came with two knights into England, and how he slew one of the knights
King Mark plots to murder his nephew Tristram by wiles or treason, and slays his own knight Bersules for refusing to participate.
- IX
King Mark is accused of traitorously slaying Berluse's father, highlighting his reputation as a treacherous king.
- How Sir Berluse met with King Mark, and how Sir Dinadan took his part
King Mark is denounced as a traitor by Sir Berluse, and his murderous nature is highlighted, contrasting with Dinadan's reluctant loyalty.
- How King Mark mocked Sir Dinadan, and how they met with six knights of the Round Table
King Mark's murderous nature and his request to conceal his identity at Arthur's court highlight his treacherous character.
- How the six knights sent Sir Dagonet to joust with King Mark, and how King Mark refused him
Sir Dinadan deceives King Mark by falsely claiming Sir Launcelot is present, leading to the humiliating chase.
- How King Mark and Sir Dinadan heard Sir Palomides making great sorrow and mourning for La Beale Isoud
King Mark is denounced by Palomides as the falsest king and most coward, full of treason; he later kills Sir Amant in a dishonest duel.
- How King Mark had slain Sir Amant wrongfully to-fore King Arthur, and Sir Launcelot fetched King Mark to King Arthur.
King Mark's cowardly murder of Sir Amant and Sir Bersules for refusing to betray Sir Tristram.
- How King Arthur made King Mark to be accorded with Sir Tristram, and how they departed toward Cornwall.
King Mark swears falsely to Arthur and the knights, plotting to imprison or kill Tristram despite his oath.
- How Sir Lamorak visited King Lot’s wife, and how Sir Gaheris slew her which was his own mother
Gaheris's premeditated ambush and murder of his mother is an act of familial betrayal and treason.
- How Sir Agravaine and Sir Mordred met with a knight fleeing, and how they both were overthrown, and of Sir Dinadan.
Agravaine and Mordred's hatred and eventual treacherous slaying of Dinadan are foreshadowed, highlighting the theme of betrayal among knights.
- How King Arthur, the Queen, and Launcelot received letters out of Cornwall, and of the answer again.
King Mark's suspicion of Tristram and his secret letters to Arthur underscore the theme of treachery and mistrust.
- How Sir Launcelot was wroth with the letter that he received from King Mark, and of Dinadan which made a lay of King Mark.
King Mark's letter slanders Queen Guenever and Sir Launcelot, attempting to sow discord and betray their honor.
- How Sir Elias and Sir Tristram fought together for the truage, and how Sir Tristram slew Elias in the field
King Mark's secret desire to slay Tristram despite his service foreshadows future betrayal.
- How at a great feast that King Mark made an harper came and sang the lay that Dinadan had made
King Mark's treason is publicly exposed through Dinadan's lay, and he responds by plotting to kill Tristram and his allies.
- How King Mark slew by treason his brother Boudwin, for good service that he had done to him
King Mark betrays and murders his own brother Prince Boudwin out of jealousy and spite, despite Boudwin's loyal service.
- How Anglides Escapes with Alisander le Orphelin
King Mark's murder of Prince Boudwin and his attempt to kill the widow and child exemplify treachery within the court.
- How Anglides Gave the Bloody Doublet to Alisander
King Mark's treacherous murder of Alisander's father, committed before Anglides' eyes, exemplifies betrayal within the court.
- How it was told to King Mark of Sir Alisander, and how he would have slain Sir Sadok for saving his life
King Mark's treacherous murder of Boudwin and his ongoing plots to destroy Alisander highlight the theme of betrayal.
- How Queen Morgan le Fay had Alisander in her castle, and how she healed his wounds
Morgan le Fay deceives Alisander by first poisoning him, then feigning healing to extract a binding oath that prevents his revenge.
- How Alisander was delivered from Queen Morgan le Fay by the means of a damosel
Morgan le Fay's imprisonment of Alisander for her own pleasure is a form of betrayal of knightly honor, and the damosel's plot to destroy the castle involves deception against Morgan.
- How Alisander met with Alice la Beale Pilgrim, and how he jousted with two knights; and after of him and of Sir Mordred.
Sir Mordred's attempt to shame Alisander by leading his horse away exemplifies treachery.
- How Sir Galahalt Did Cry a Jousts in Surluse
King Mark's false and felonious slaying of Sir Tristram and Alisander exemplifies treachery within the knightly world.
- Of the Fifth Day, and How Sir Lamorak Behaved Him
Arthur laments the slaying of his sister by Gawaine's kin, an act of treachery that disrupts the unity of the Round Table.
- XLIX
Launcelot's disguise and trickery against Dinadan, though playful, echo themes of deception and mistrust among knights.
- How by Treason Sir Tristram Was Brought to a Tournament for to Have Been Slain, and How He Was Put in Prison
King Mark's elaborate plot to have Sir Tristram killed at a tournament and his subsequent imprisonment of Tristram exemplify deep familial and political betrayal.
- LI
King Mark repeatedly betrays his nephew Sir Tristram by imprisoning him and forging papal letters, despite promises to Sir Percivale.
- LIII
King Mark's imprisonment by his own knights and Breuse Saunce Pité's deceitful actions highlight pervasive treachery.
- LVII
Palomides' declared hatred of Tristram and his subsequent change of heart highlight the tension between enmity and loyalty among knights.
- How they approached the Castle Lonazep, and of other devices of the death of Sir Lamorak
The murder of Sir Lamorak by Gawaine and his brothers is a central act of treachery discussed in the chapter.
- LXI
King Hermance is betrayed and murdered by two knights he raised and trusted, highlighting the peril of misplaced trust.
- LXII
King Hermance is slain by his own knights through felony and treason, highlighting the theme of betrayal.
- Of the preparation of Sir Palomides and the two brethren that should fight with him
The slaying of Sir Lamorak by Sir Gawaine and his brethren is described as an act of treason, and the two brethren Helius and Helake are characterized as false and full of treason for murdering their king.
- How the second day Palomides forsook Sir Tristram, and went to the contrary part against him
Palomides deceives Tristram by feigning weariness and then joining the opposing side to steal glory.
- How Sir Palomides changed his shield and his armour for to hurt Sir Tristram, and how Sir Launcelot did to Sir Tristram.
Palomides' disguise to harm Tristram is an act of deceit, contrasting with the open chivalric combat.
- How Sir Tristram departed with La Beale Isoud, and how Palomides followed and excused him
Palomides's deceit in disguising himself and attacking Tristram during the tournament, witnessed by Isoud.
- How Sir Tristram turned to King Arthur’s side, and how Palomides would not.
Palomides accuses Tristram of treachery for changing sides, highlighting the tension between loyalty and personal choice.
- How Sir Tristram and Launcelot, with Palomides, came to joyous Gard; and of Palomides and Sir Tristram
Tristram accuses Palomides of treason for loving La Beale Isoud, though Palomides argues love is free and not treacherous.
- How Sir Launcelot came to Pelles, and of the Sangreal, and of Elaine, King Pelles’ daughter
Dame Brisen and King Pelles deceive Sir Launcelot through enchantment, manipulating his love for Queen Guenever to achieve their own ends.
- How Dame Elaine, Galahad’s mother, came in great estate unto Camelot, and how Sir Launcelot behaved him there.
Dame Brisen's plan to deceive Launcelot into Elaine's bed constitutes a deliberate betrayal of trust and the queen's command.
- How Dame Brisen by enchantment brought Sir Launcelot to Dame Elaine’s bed, and how Queen Guenever rebuked him.
Dame Brisen's enchantment betrays Launcelot's trust, and Guenever perceives his actions as treason.
- How Dame Elaine was commanded by Queen Guenever to avoid the court, and how Sir Launcelot became mad.
Guenever's rebuke and Elaine's enchantment betray Launcelot's trust, driving him to madness and loss.
- How Sir Percivale saw a ship coming to him-ward, and how the lady of the ship told him of her disheritance
The lady's attempt to seduce Percivale away from his spiritual path and her admission of turning men against their lord highlight themes of treachery.
- How Sir Bors met with his brother Sir Lionel, and how Sir Lionel would have slain Sir Bors
Sir Lionel perceives Sir Bors's choice to aid a gentlewoman instead of him as a profound betrayal, leading to a violent confrontation between brothers.
- Book XVIII
Agravaine and Mordred's betrayal of Launcelot and Guenever shatters the unity of the Round Table.
- Of the joy King Arthur and the queen had of the achievement of the Sangreal; and how Launcelot fell to his old love again.
Sir Agravaine and Sir Mordred's watchfulness and open-mouthed gossip foreshadow potential betrayal.
- The Poisoned Apple
Sir Pinel's poisoning of the apples to kill Sir Gawaine is an act of treacherous revenge for the death of his kinsman Sir Lamorak.
- How Sir Mador Appeached the Queen of Treason
The accusation of treason and the suspicion surrounding the queen's dinner reflect themes of betrayal and false dealing.
- The Queen's Champion
The queen is suspected of treasonous murder, and Sir Bors hints that 'there was treason among us' at the dinner.
- How the truth was known by the Maiden of the Lake, and of divers other matters
Sir Pinel's attempt to poison Sir Gawaine and the subsequent false accusation of Queen Guenever highlight the theme of betrayal and treachery within the court.
- XV
The queen accuses Launcelot of false betrayal, while Sir Bors argues he meant no evil, creating a conflict of perceived treachery.
- Book XIX
Sir Meliagrance's false accusation of treason exemplifies betrayal within the court.
- How Queen Guenever rode a-Maying with certain knights of the Round Table and clad all in green
Meliagrance's ambush, planned while the queen rides in peace, exemplifies treachery against the queen and the Round Table.
- How Sir Meliagrance Took the Queen and Her Knights
Sir Meliagrance, a knight of the Round Table, betrays his oath by ambushing the queen and her unarmed knights.
- How Sir Launcelot Had Word How the Queen Was Taken
Meliagrance treacherously captures the queen and her knights, then sets an ambush for Launcelot.
- How Sir Launcelot’s horse was slain, and how Sir Launcelot rode in a cart for to rescue the queen
Sir Meliagrance's ambush and the archers' attack on Launcelot's horse exemplify treachery against a knight of the Round Table.
- How Sir Meliagrance Required Forgiveness of the Queen, and How She Appeased Sir Launcelot; and Other Matters
Meliagrance's cowardly ambush with archers to slay Launcelot's horse is condemned as traitorly behavior.
- How Sir Launcelot came in the night to the queen and lay with her, and how Sir Meliagrance appeached the queen of treason
Sir Meliagrance's accusation of treason against the queen is a treacherous act aimed at hiding his own treason.
- VII
Meliagrance uses a trap to betray Launcelot after agreeing to a fair duel, demonstrating deceitful behavior.
- How Sir Launcelot was delivered out of prison by a lady, and took a white courser and came for to keep his day
Sir Meliagrance's imprisonment of Launcelot is a treacherous act designed to prevent him from defending the queen.
- How Sir Launcelot came the same time that Sir Meliagrance abode him in the field and dressed him to battle.
Sir Meliagrance's treason against Sir Launcelot and false accusation of the queen are central to the chapter.
- How King Arthur Handled Sir Urre
The deaths of Sir Tristram and Sir Lamorak are recounted as acts of treason, by King Mark and Sir Gawaine's brethren respectively.
- How There Was a Party Made of an Hundred Knights Against an Hundred Knights, and of Other Matters
Sir Agravaine's constant scheming against Queen Guenever and Sir Launcelot foreshadows the betrayal that leads to the downfall of Arthur's court.
- Book XX
Sir Agravaine and Sir Mordred betray Launcelot and Guenever by plotting to expose their affair, leading to a breakdown of trust within the Round Table.
- I
Agravaine and Mordred plot to betray Launcelot and Guenever, despite Launcelot's past kindnesses.
- How Sir Agravaine Disclosed Their Love to King Arthur
Agravaine and Mordred betray Launcelot and the queen to King Arthur, setting a trap.
- How Sir Launcelot was espied in the queen’s chamber
Agravaine and Mordred betray Launcelot and the queen by spying and bringing armed knights to trap them.
- How Sir Launcelot slew Sir Colgrevance, and armed him in his harness, and after slew Sir Agravaine, and twelve of his fellows
Agravaine and Mordred betray Launcelot by setting a trap, while Launcelot is accused of treason against the king.
- V
Launcelot reveals the plot against him in the queen's chamber, orchestrated by Sir Agravaine and others, leading to war.
- Of the counsel and advice that was taken by Sir Launcelot and his friends for to save the queen
The discussion of Tristram's murder by King Mark highlights the theme of betrayal, contrasting Arthur's perceived trustworthiness with Mark's treachery.
- How Sir Mordred rode hastily to the king, to tell him of the affray and death of Sir Agravaine and the other knights
Mordred's report and the discovery of Launcelot in the queen's chamber lead to accusations of treason, shattering the trust of the Round Table.
- How Sir Launcelot and his kinsmen rescued the queen from the fire, and how he slew many knights
Arthur's command to execute the queen and Launcelot's defiance lead to a rupture in the court, seen as betrayal by both sides.
- Of the sorrow and lamentation of King Arthur for the death of his nephews and other good knights, and also for the queen, his wife.
Arthur blames Agravaine and Mordred's malice toward Launcelot for the tragic deaths and the breaking of the Round Table fellowship.
- The Siege of Joyous Gard
The accusation that Launcelot killed unarmed knights, even accidentally, is seen as a betrayal of knightly bonds.
- Of the communication between King Arthur and Sir Launcelot, and how King Arthur reproved him.
Arthur accuses Launcelot of treason for slaying his knights and taking the queen, while Launcelot denies treachery and accuses Gawaine of murder.
- How the cousins and kinsmen of Sir Launcelot excited him to go out to battle, and how they made them ready.
Gawaine's refusal to allow reconciliation and his plotting to overset and slay Launcelot represent a betrayal of the fellowship's unity.
- Of the deliverance of the queen to the king by Sir Launcelot, and what language Sir Gawaine had to Sir Launcelot.
Launcelot accuses liars of causing debate between him and Arthur, referencing the treachery of Agravaine and Mordred.
- XVI
Gawaine accuses Launcelot of being false to King Arthur and himself, highlighting the theme of perceived betrayal.
- XVII
Launcelot feels unjustly banished and accused of treason, while Gawaine's hostility deepens the rift.
- How King Arthur and Sir Gawaine made a great host ready to go over sea to make war on Sir Launcelot
Arthur places Queen Guenever under Mordred's governance, foreshadowing Mordred's later usurpation and betrayal.
- The Siege of Benwick: Sir Gawaine's Challenge
Sir Gawaine accuses Sir Launcelot of treason, escalating the conflict and forcing Launcelot to defend his name.
- Book XXI
Mordred's usurpation and seizure of Guenever represent the ultimate betrayal of kin and king.
- How Sir Mordred presumed and took on him to be King of England, and would have married the queen, his father’s wife.
Sir Mordred betrays King Arthur by usurping the throne and attempting to marry Queen Guenever, spreading false news of Arthur's death.
- How after that King Arthur had tidings, he returned and came to Dover, where Sir Mordred met him to let his landing; and of the death of Sir Gawaine.
Sir Mordred's usurpation of the throne and attempt to marry Queen Guenever exemplify the ultimate betrayal of kin and king.
- III
Mordred's usurpation and the war against Arthur highlight the betrayal at the heart of the kingdom's downfall.
- How by misadventure of an adder the battle began, where Mordred was slain, and Arthur hurt to the death.
Mordred's usurpation and the mutual distrust during the truce underscore the theme of betrayal.
- How Sir Lancelot Heard of the Death of King Arthur and of Sir Gawaine
Mordred's usurpation and betrayal of King Arthur drive Launcelot's wrath.
