24 October 2016 | Prince William, Duke of Cambridge touches the key to Stirling Castle held by the The Earl of Mar and Kellie, during a visit to Stirling Castle in Stirling, Scotland. The Duke of Cambridge in his role as Earl of Strathearn is Patron of The Thin Red Line Appeal to redevelop The Argyll and Sutherland Highlanders Regimental Museum at the Castle. (c) Mark Runnacles - WPA Pool/Getty Images




















