John Ashford Renshaw Starr (born 6 August 1908 – 1996) was an artist and a soldier during the Second World War. One of two sons of an American father, Alfred Demarest Starr, a bookkeeper who became a naturalised British subject, and an English mother, Ethel Renshaw, he was a grandson of William Robert Renshaw. His story is told in The Starr Affair (by Jean Overton Fuller).
When war broke out in 1939, he was a poster artist living in Paris. Nine months earlier he had attempted to join the Royal Air Force but was prevented from doing so on the grounds that his father was American. In 1940, having obtained permission from the War Office, he joined the King's Own Scottish Borderers regiment of the British Army in Rouen before being assigned to the Field Security Police in Nantes. Following the German breakthrough in France, his unit was evacuated to England via Saint-Nazaire. He continued training with the Field Security Police in Winchester, before being assigend to the War Office as an artist and eventually gaining a commission in the Special Operations Executive (SOE). His first mission in Valence in August 1942 was relatively uneventful, and he returned to England, but in May 1943 he was sent back to build an organisation, to be known as the Acrobat network, around Saint-Étienne and Dijon.
On 18 July 1943 he was captured by the Germans and placed in the custody of the Sicherheitsdienst (or SD) in Dijon before being transferred to Fresnes prison in Paris (where he was shot attempting to escape, and then tortured), and eventually to the Paris headquarters of the SD at 84 Avenue Foch. Several of his fellow-prisoners at the Avenue Foch suspected him of collaboration with the enemy although he made a failed escape attempt (according to his own account) together with another SOE prisoner, Noor Inyat Khan and a French colonel, Léon Faye, both of whom were later killed. He remained at Avenue Foch until 1944 when he was transferred to the concentration camp at Sachsenhausen near Berlin. Some British prisoners at Sachsenhausen were executed by hanging.