Seeking information about JOHN SUMMERS, mines manager for the 4th Duke of Atholl. He died 27 December 1809 at Kentraugh, Rushen, having married Mary Jackson on 28 April 1793 in Kirkoswald, Cumberland. He was listed as a bachelor from Kirk Rushen at the time of marriage. He was likely a Scot, but how can I learn more about his life? Any help would be appreciated. Thanks.