George, Duke of Clarence, convicted of treason against his older brother Edward IV of England, is privately executed in the Tower of London.
21 years, 9 months, 13 days later
Perkin Warbeck, pretender to the throne of England, is hanged for reportedly attempting to escape from the Tower of London.
5 days later
Edward Plantagenet, 17th Earl of Warwick, last male member of the House of York, is executed for reportedly attempting to escape from the Tower of London.