English: Clarence Ussher (9 September 1870 - 20 September 1955) was a physician and an American missionary in the Van region during the Armenian Genocide, which he reported that 55,000 Armenians had been killed. In 1917, Ussher published a memoir regarding his experience in Van, called An American Physician in Turkey: A Narrative of Adventures in Peace and War. It is considered one of the most detailed eyewitness accounts of the events. Ussher openly blamed the Turkish government for the systematic massacres of Armenians. His accounts of the Armenian Genocide were depicted in the movie Ararat.