 To claim her right , Mary Tudor began assembling her supporters in East <unk> and demanded to be recognized as queen by the Privy Council in London . When her letter arrived on 10 July 1553 during dinner , the Duchess of Suffolk , Jane 's mother , and the Duchess of Northumberland broke into tears . Mary was gathering strength , and on 14 July the Duke marched to Cambridge with troops to capture her . As it came , he passed a tranquil week until he heard on 20 July that the Council in London had declared for Mary . On the orders of the Privy Council Northumberland himself now proclaimed Queen Mary at the market @-@ place and awaited his arrest . His wife was still in the Tower , but was soon released . She tried to intercede personally for her imprisoned husband and five sons with Mary , who was staying outside London . However , five miles before reaching the court the Duchess was turned away on the Queen 's orders . She then wrote a letter to her friend Lady Paget , the wife of William , Lord Paget , asking her to plead with the Queen 's ladies for her husband 's life . Her plea , if it went not unheard , was in vain , and the Duke of Northumberland was executed on 22 August 1553 on Tower Hill after having recanted his Protestant faith . 
