Elizabeth I of England Plot of 1586, Elizabeth's spymaster Sir Francis Walsingham and the royal council keenly assembled a case against her. At first, Elizabeth resisted calls for Mary's death. By late 1586, she had been persuaded to sanction her trial and execution on the evidence of letters written during the Babington Plot. Elizabeth's proclamation of the sentence announced that "the said Mary, pretending title to the same Crown, had compassed and imagined within the same realm divers things tending to the hurt, death and destruction of our royal person." On 8 February 1587, Mary was beheaded at Fotheringhay Castle, Northamptonshire. After Mary's execution,
Mary, Queen of Scots of England, Elizabeth was recognised as her sister's heir, and Henry VIII's last will and testament had excluded the Stuarts from succeeding to the English throne. Yet, in the eyes of many Catholics, Elizabeth was illegitimate, and Mary Stuart, as the senior descendant of Henry VIII's elder sister, was the rightful queen of England. Henry II of France proclaimed his eldest son and daughter-in-law king and queen of England, and in France the royal arms of England were quartered with those of Francis and Mary. Mary's claim to the English throne was a perennial sticking point between her and Elizabeth