Thomas Howard (10 March 1536 to 2 June 1572) was the fourth Duke of Norfolk. He was a Catholic English nobleman who conspired to overthrow the Protestant Queen Elizabeth I (who was his second cousin on the Tudor queen's maternal grandmother's side of the family) in 1570 and 1571. Elizabeth first imprisoned Norfolk in 1569 for scheming to marry the Catholic Mary, Queen of Scots. He was released under house arrest in 1570, but was arrested again on 7 September 1571 and sent to the Tower of London for conspiring with Roberto di Ridolfi, a (Catholic) Florentine banker, amongst others, to overthrow the Queen, in what became known as the Ridolfi plot. Norfolk was executed for treason on 2 June 1572, and his lands and titles again became forfeit. Show less «