Bersules
Bersules, Arthurian knight slain by King Mark for refusing to conspire against Tristram, attested in 1 source.
Bersules appears in Le Morte d'Arthur as a knight slain by King Mark for refusing to participate in treachery against Sir Tristram. When Mark suddenly draws his sword, Bersules can only exclaim: "Alas, said Sir Bersules, what mean you?" (Le Morte d'Arthur, Book X, Chapter VII). Mark "smote Sir Bersules on the head, that the sword went to his teeth" (Le Morte d'Arthur, Book X, Chapter VII).
The consequences of Bersules' murder extend beyond his death. A companion later reports to damsels "how cowardly King Mark had slain him, and Sir Bersules, his fellow" (Le Morte d'Arthur, Book X, Chapter XV). The dying accuser explains the cause: "all was because Sir Bersules and I would not consent by treason to slay the noble knight, Sir Tristram" (Le Morte d'Arthur, Book X, Chapter XV). Bersules' refusal to participate in treachery becomes the grounds for a formal appeal of treason against Mark.
All four citations come from Le Morte d'Arthur, spanning two chapters that together form a single narrative arc. Bersules functions as a moral counterweight to Mark's treachery -- his refusal to conspire against Tristram costs him his life, and his death becomes evidence in the case against the king. The detail of the sword reaching "to his teeth" gives the killing a visceral specificity that emphasises its brutality. Bersules speaks only once, and his words -- "what mean you?" -- capture the shock of a loyal man confronting his lord's sudden violence.
Appears in: Beings, Entities in Le Morte d'Arthur, British Tradition