Abstract:The events in the first phase of the Wars of the Roses that led to Edward, Duke of York's accession to the English throne in the spring of 1461 as Edward IV are wellestablished, yet Edward's personality and activity before he became king have remained opaque to historical scrutiny. How much of a role did he play in seizing the crown? Was he a cipher of Richard Neville, Earl of Warwick in the initial stages of his career? A rare signet warrant from Edward granting protection to the Lancastrian foundation of Eton College just days prior to his usurpation of Henry VI illuminates the role Edward played at this early stage of his political career. By the date of the grant, Edward was already an accomplished military leader with a substantial ducal affinity; however, he was a relative unknown figure with little experience in national politics, overshadowed by his more illustrious cousin, the "Kingmaker". This document attests to Edward's emerging political agency, placing the duke's signet warrant within the context of earlier Yorkist rhetoric and providing a more nuanced view of events on the ground on the eve of his usurpation.