WINDSOR, ENGLAND - MAY 12: Prince Philip, Duke of Edinburgh during the Windsor Horse Show on May 12, 2017 in Windsor, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
WINDSOR, ENGLAND - MAY 12: Prince Philip, Duke of Edinburgh during the Windsor Horse Show on May 12, 2017 in Windsor, England. (Photo by Mark Cuthbert/UK Press via Getty Images)