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In page Henry VI of England:

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Around Christmas Day 1454, King Henry regained his senses. Disaffected nobles who had grown in power during Henry's reign, most importantly the Earls of Warwick and Salisbury, took matters into their own hands. They backed the claims of the rival House of York, first to the control of government, and then to the throne itself (from 1460), pointing to York's better descent from Edward III. It was agreed that York would become Henry's successor, despite York being older.[1] In 1457, Henry created the Council of Wales and the Marches for his son Prince Edward, and in 1458, he attempted to unite the warring factions by staging the Loveday in London.[citation needed]