Topic summary
Yorkist

Extracted from the Wikipedia article House of York.
Reigns of the Yorkist Kings
The early reign of Edward IV was marred by Lancastrian plotting and uprisings in favour of Henry VI. 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.