House of York Warwick himself changed sides, and supported Margaret of Anjou and the king's jealous brother George, Duke of Clarence, in briefly restoring Henry in 1470-71. However, Edward regained his throne, and the House of Lancaster was wiped out with the death of Henry VI himself, in the Tower of London in 1471. In 1478, the continued trouble caused by Clarence led to his execution in the Tower of London; popularly he is thought to have been drowned in a butt of malmsey wine. On Edward's death in 1483, the crown passed to his twelve-year-old son Edward. Edward IV's younger brother Richard,
Hugh Butt He died in Rochester, Minnesota. Hugh Butt Hugh Roland Butt (January 8, 1910 – August 16, 2008) was an American physician who developed methods to treat hemorrhaging patients with vitamin K. Butt was born in Belhaven, North Carolina. He earned his M.D. from the University of Virginia in 1933 and a master's degree in medicine from the University of Minnesota in 1937. Butt was a resident at the Mayo Clinic when he made his most notable finding that Vitamin K stopped bleeding in patients with jaundice, previously a fatal condition. He later worked with dicumarol isolated by Paul Link, and