Lady Jane Grey, also known as Lady Jane Dudley after her marriage, and nicknamed the "Nine Days Queen", was an English noblewoman who was proclaimed Queen of England and Ireland on 10 July 1553 and reigned until she was deposed by the Privy Council of England, which proclaimed her cousin, Mary I, as the new Queen on 19 July. Jane was later beheaded for high treason. Born: October 1537 Died: February 22, 1554 In office: July 20, 1553 – July 29, 1553 Wiki link