Tristram and Kehydius conflict

Tristram’s discovery of letters between La Beale Isoud and Sir Kehydius turns concealed correspondence into an open rupture: he confronts both, invokes what he has sacrificed for Isoud and done for Kehydius’s family, and threatens Kehydius. The confrontation ends not in resolution but in flight, Isoud’s collapse, and Tristram’s departure from Tintagil, setting his grief-driven wandering in motion.

The Hidden Correspondence

After Tristram has returned to Cornwall with Sir Lamorak and Kehydius, Sir Dinas the seneschal and Dame Bragwaine arrange for him to meet La Beale Isoud privately at court. Kehydius, brought back from Brittany with Tristram, falls in love with Isoud and secretly sends her letters and ballads. Isoud, moved by his complaint, replies with a letter meant to comfort him. Tristram remains in a turret at her direction and comes to her when he can; the correspondence develops within the same courtly secrecy that allows the lovers’ reunion.

Discovery and Confrontation

The exposure comes by chance while King Mark plays chess beneath the chamber window. Tristram finds Kehydius’s letter to Isoud and the letter she sent in reply, with Isoud present in the chamber. He brings the exchanged letters to her attention and accuses her of betraying the love he has given her. His protest is framed through concrete claims of loyalty and sacrifice: he says he has forsaken lands and riches for her. He then turns to Kehydius, reminding him that Tristram brought him from Brittany and won back the lands of his father, King Howel.

Tristram also names his marriage to Kehydius’s sister, Isoud la Blanche Mains, as a bond formed in gratitude for her goodness to him. Against that history, he calls Kehydius’s conduct false and treacherous and threatens revenge. He draws his sword and advances, but the episode does not describe a fight between the two men: Kehydius escapes through a bay window, passing over King Mark as he plays below. When Mark asks what has happened, Kehydius offers the explanation that he had fallen while sleeping by the window.

Flight and Aftermath

As Isoud swoons, Tristram fears that Mark will discover he is at court. He withdraws to the tower’s stronghold, arms himself, and, finding no one resisting him, sends Gouvernail to fetch his horse and spear. He then rides openly out of Tintagil Castle. At the gate he meets Gingalin, Sir Gawaine’s son, who challenges him; Tristram, with only a sword, knocks Gingalin from his saddle and rides on into the forest.

King Mark witnesses Tristram’s departure and sends a squire to assist the injured knight. Gingalin cannot identify his opponent, but reports that the departing knight sighed and grieved. Tristram soon meets Sir Fergus and falls from his horse in a swoon of sorrow, remaining in distress for three days and nights. The correspondence thus produces consequences beyond the chamber: it breaks the private reunion, exposes Tristram to discovery at Mark’s court, and sends him into the forest in grief.

Narrative Significance

The episode’s turning point is a piece of writing: two letters, made private through secrecy, become proof that Tristram can no longer ignore. His reproach is sharpened by the contrast between the loyalties he recounts and the comfort Isoud has offered Kehydius. Yet the scene leaves the relationship’s full meaning unresolved; it records the letters, Tristram’s accusation, and the flight that follows, rather than establishing further motives or a lasting settlement. The discovery’s immediate outcome is separation, and the next episode carries that separation into Tristram’s increasingly severe grief.