The Duke of Westminster, Gerald Cavendish Grosvenor, attended The Royal Windsor Endurance in 2016. He died suddenly on the 9th August 2016, aged 64.
On Graham Reading Press Photography Facebook Page here – https://goo.gl/OtLdo6
Photo in the Daily Mail Online – http://www.dailymail.co.uk/news/article-3732222/Billionaire-landowner-Duke-Westminster-dies-aged-64.html