Peter is a humble apprentice armorer whose desperate act of accusation sets in motion one of the play’s most peculiar scenes of justice. Brought before the King in Act 1, Scene 3, he levels a charge of high treason against his master, Thomas Horner, claiming that Horner spoke seditious words asserting the Duke of York’s claim to the throne. Peter’s accusation is almost certainly false—a product of anger at his master’s discipline—yet it forces the court to hold a trial by combat to determine the truth. This medieval ordeal, in which God is believed to judge guilt or innocence through martial victory, becomes Peter’s only pathway to vindication, despite his terror at the prospect.
Peter’s character embodies the powerlessness of the lower orders in a world where birth and rank determine everything. As an apprentice, he has no authority to speak in his own defense; his only recourse is the ordeal itself. His speeches reveal a man consumed by fear and desperation, begging mercy from the court, convinced he will be killed by his stronger master. He drinks heavily before the fight and cowers at the prospect of violence. Yet in Act 2, Scene 3, when the combat finally occurs, something miraculous happens: Peter strikes Horner down and kills him, forcing a deathbed confession of treason. The man he accused was indeed guilty, and Peter’s improbable victory stands as proof of his honesty—or, in the play’s logic, of God’s judgment rendered visible.
The irony is that Peter’s truth, however accidentally vindicated, changes nothing for him. He receives reward and the King’s favor, but he vanishes from the play immediately after, swallowed back into obscurity. His brief moment in the light of royal justice serves primarily to demonstrate how the ordeal system works and to incriminate Horner, not to elevate Peter himself. He represents the common man as a pawn in larger games, useful only when his testimony or his sword arm serves a nobleman’s purpose, then forgotten. His fear, his reluctance, and his astonishing luck all mark him as a creature of chance rather than agency—a figure whose survival depends entirely on circumstances beyond his control.