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,
Asimov's Guide to Shakespeare for doing this. Within each category, the plays are arranged according to internal (historical) chronology, making allowance for the several not based on actual events. Asimov notes how much is real history, and describes who the historical people were, where applicable. He traces those characters who appear in more than one play, and provides maps to explain key geographical elements. Asimov's approach is not popular with some readers' prejudices: "Asimov's Guide to Shakespeare", vols I and II (1970), . Gramercy Books. Nearly 800 pages long plus an index, the work was originally published in two volumes; Greek, Roman and Italian