WINDSOR, ENGLAND - JUNE 18: Viscount Linley, his wife Viscountess Linley and Lady Sarah Chatto attend the Order of the Garter procession and service at Windsor Castle on June 18, 2011 in Windsor, England. The Order of the Garter is the senior and oldest British Order of Chivalry, founded by Edward III in 1348. Membership in the order is limited to the sovereign, the Prince of Wales, and no more than twenty-four members.