On 14 September 1914 Byng was killed in action near the French village of Vailly.
Vailly-sur-Sauldre,a commune in the Cher department in the Centre region of France.
Claude Carra Saint-Cyr (born 28 July 1760 in Lyon, died 5 January 1834 in Vailly-sur-Aisne) was a French general and diplomat, noted for his participation to the French Revolutionary and Napoleonic Wars.