<P> Richard asks Buckingham to secure the death of the princes, but Buckingham hesitates . Richard then recruits Sir James Tyrrell, who kills both children . When Richard denies Buckingham a promised land grant, Buckingham turns against Richard and defects to the side of Henry, Earl of Richmond, who is currently in exile . Richard has his eye on his niece, Elizabeth of York, Edward IV's next remaining heir, and poisons Lady Anne so he can be free to woo the princess . The Duchess of York and Queen Elizabeth mourn the princes' deaths, when Queen Margaret arrives . Queen Elizabeth, as predicted, asks Queen Margaret's help in cursing . Later, the Duchess applies this lesson and curses her only surviving son before leaving . Richard asks Queen Elizabeth to help him win her daughter's hand in marriage, but she is not taken in by his eloquence, and eventually manages to trick and stall him by saying she will let him know her daughter's answer in due course . </P> <P> The increasingly paranoid Richard loses what popularity he had . He soon faces rebellions led first by Buckingham and subsequently by the invading Richmond . Buckingham is captured and executed . Both sides arrive for a final battle at Bosworth Field . Prior to the battle, Richard is visited by the ghosts of his victims, all of whom tell him to "Despair and die!" after which they wish victory upon Richmond . He awakes screaming for "Jesus" to help him, slowly realising that he is all alone in the world, and cannot even pity himself . </P> <P> At the Battle of Bosworth Field, Lord Stanley (who is also Richmond's stepfather) and his followers desert Richard's side, whereupon Richard calls for the execution of George Stanley, Lord Stanley's son . This does not happen, as the battle is in full swing, and Richard is left at a disadvantage . Richard is soon unhorsed on the field at the climax of the battle, and cries out, "A horse, a horse, my kingdom for a horse!" Richmond kills Richard in the final duel . Subsequently, Richmond succeeds to the throne as Henry VII, and marries Princess Elizabeth from the House of York . </P> <P> Richard III is believed to be one of Shakespeare's earlier plays, preceded only by the three parts of Henry VI and perhaps Titus Andronicus and a handful of comedies . It is believed to have been written c. 1592 - 1594 . Although Richard III was entered into the Register of the Stationers Company on 20 October 1597 by the bookseller Andrew Wise, who published the first Quarto (Q1) later that year (with printing done by Valentine Simmes), Christopher Marlowe's Edward II, which cannot have been written much later than 1592 (Marlowe died in 1593) is thought to have been influenced by it . A second Quarto (Q2) followed in 1598, printed by Thomas Creede for Andrew Wise, containing an attribution to Shakespeare on its title page . Q3 appeared in 1602, Q4 in 1605, Q5 in 1612, and Q6 in 1622, the frequency attesting to its popularity . The First Folio version followed in 1623 . </P>

Who said a horse my kingdom for a horse
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