Tuesday, July 10 On this date in 1553, Lady Jane Grey assumed rule as the Queen of England. Although named as successor to the throne by the previous monarch, Edward IV, Jane was deposed after a mere nine days as queen due to a convoluted series of political/religious plots that had been put into play by supporters of Henry VIII's legally illegitimate daughter, Mary. Lady Jane was later executed by beheading; she was, at most, ...