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
TSS Duke of Clarence and were subsequently picked up by the lifeboats. However five crew members who were below at the time of collision drowned. Two further vessels joined the search, "Manx Queen", which was en route from Barrow-in-Furness to Belfast, was subsequently joined by "Duke of Clarence"s sister, "Duke of York", which was making passage from Fleetwood to Belfast. The search lasted for three hours, following which all vessels went on their respective ways. Captain Shimmin, Kelly, and Turner were landed at Fleetwood and subsequently made their way back to the Isle of Man via Liverpool. As a consequence of the collision "Duke