1714 War of Spanish Succession Secretary of States Copy of Letter appointing George Hamilton The Earl of Orkney to be Governor of Edinburgh Castle Whitehall 6 April. Signed by Francis Gwyn Secretary of War. Size 18x 22cm approx. Note: Gwyn had held a number of official positions and was a close associate of the Earl of Rochester, the Queen’s Uncle. Hamilton was a distinguished soldier who took an important role in Marlborough’s victories and led the final charge at the Battle of Blenheim. He was the first office to be promoted to Field Marshal.