Sir Arthur Conan Doyle and the high cost of the Great War

Like so many British families, Sir Arthur's suffered greatly during World War I. His elders son, Captain Kingsley Conan Doyle, died from influenza aggravated by war wounds in 1918. His brother, Brigadier-General Innes Doyle, died from post-war pneumonia the following year. Conan Doyle also lost two brothers-in-law and two nephews in the conflict.