4 May - Wars of the Roses: At the Battle of Tewkesbury, King Edward defeats a Lancastrian army under Queen Margaret and her son, Edward of Westminster the Prince of Wales, who is killed.
18 February - George Plantagenet, 1st Duke of Clarence, convicted of treason against his older brother Edward IV of England, is privately executed in the Tower of London on the order of his other brother Richard, Duke of Gloucester.