George Plantagenet, 1st Duke of Clarence not present – Edward himself prosecuted his brother, and demanded that Parliament pass a Bill of Attainder against his brother, declaring that he was guilty of "unnatural, loathly treasons" which were aggravated by the fact that Clarence was his brother, who, if anyone did, owed him loyalty and love. Following his conviction, he was "privately executed" at the Tower on 18 February 1478, by tradition in the Bowyer Tower, and soon after the event, the rumour gained ground that he had been drowned in a butt of Malmsey wine. Richard III biographer Paul Murray Kendall believes that the reason that
Lionel of Antwerp, 1st Duke of Clarence Lionel of Antwerp, 1st Duke of Clarence Lionel of Antwerp, 1st Duke of Clarence, KG (; 29 November 133817 October 1368) was the third son, but the second son to survive infancy, of the English king Edward III and Philippa of Hainault. He was named for his birthplace, at Antwerp in the Duchy of Brabant. Lionel was born of a Flemish mother and was a grandson of William I, Count of Hainaut. He grew to be nearly seven feet in height and had an athletic build. Betrothed as a child to Elizabeth de Burgh, 4th Countess of Ulster (died 1363),