Seriously ill, and fearing his own death,
King Edward VI granted Northumberland's request for the marriage of Suffolk's daughter
Lady Jane Grey to Northumberland's son,
Lord Guildford Dudley, on 25 May 1553. Edward later altered his will to make Jane his designated successor. Edward died on 6 July 1553, and three days later Suffolk, Northumberland, and other members of the Privy Council proclaimed Jane queen. This proclamation failed; not by a large-scale rallying of forces in the country to Henry VIII's eldest daughter, the future Queen
Mary I, as is often thought, but by a wavering Privy Council switching its allegiance to Mary during Northumberland's absence on the campaign against her. The decision was led by
Henry Fitzalan, 12th Earl of Arundel, Suffolk's brother-in-law, and
William Herbert, 1st Earl of Pembroke. Arundel had been imprisoned earlier by Northumberland for having sided with the previous Protector, Somerset; but it is not clear why Pembroke revolted, especially since his son and heir, Henry Herbert, married Henry Grey's other daughter,
Katherine, the same day as Jane's wedding. The country was divided in its loyalties to the two contenders for Queen at the time. By his wife's friendship with the new Queen Mary, Grey and his daughter and son-in-law temporarily avoided execution. However, Mary had Henry Grey beheaded on 23 February 1554 at around nine to ten o'clock in the morning on
Tower Hill, after his conviction for
high treason for his part in Sir
Thomas Wyatt's attempt (JanuaryFebruary 1554) to overthrow her after she announced her intention to marry King
Philip II of Spain. Eleven days earlier, on 12 February, his daughter Jane and his son-in-law, Guildford, had been executed. ==Mummified head==