This Day in History: 1453-12-04

On 4th December 1453, Henry VI’s mental incapacity was officially acknowledged for the first-time allowing Richard, Duke of York (lord of Sandal Castle), and his allies in council more latitude to legitimize York’s ‘agenda’ and authority against Queen Margaret and her allies including Viscount Beaumont and Cardinal Kempe. York’s faction was dominated by the Duke of Norfolk, York’s Neville in-laws (Earls of Salisbury and Warwick), and the Bourchier brothers (Thomas, later Archbishop of Canterbury and Henry, Earl of Essex)