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,
Fotheringhay Castle the reign of Edward II. During the Second Barons' War, Fotheringhay and Chester Castle were taken by Robert de Ferrers, 6th Earl of Derby. He held them from 1264 to 1265. Edward II granted Fotheringhay Castle to John of Brittany, Earl of Richmond. When John died in 1334, his granddaughter inherited Fotheringhay Castle, Mary de St Pol, the widowed countess of Pembroke. She died in 1377, and Edward III gave her property over to his son, Edmund Langley. In 1385, he was made Duke of York by the king and Fotheringhay Castle became his principal seat. According to John Leland