Born: August 10, 1858, Bayswater, London, England.
Died: November 17, 1945, Jersey, Channel Islands.
Buried: “Mr. Athelstan Riley, Seigneur de la Trinite, the ecclesiologist and antiquary, who refused to leave his house when the Germans occupied the island, directed in his will, published to-day, that he ‘be buried in the Riley Tomb in Trinity Church, Jersey, and his heart sent to England and buried in the Riley Chantry Chapel at St. Petroc Minor, Cornwall.’” Gloucestershire Echo, August 20, 1946.

John was the husband of Andalusia Molesworth, daughter of Samuel Molesworth, 8th Viscount Molesworth.
He graduated from Eton and from Pembroke College, Oxford (BA 1881, MA 1883).
For much of his life he was a member of the House of Laity for the Province of Canterbury. At some point he acquired the Manoir de la Trinité in Jersey, and thus became Seigneur of the Island of Jersey. He was on the island when the Germans invaded in World War II, and spent the rest of his life there.