Henry Morgenthau (; April 26, 1856 – November 25, 1946) was a German-born American lawyer and businessman, best known for his role as the ambassador to the Ottoman Empire during World War I. Morgenthau was one of the most prominent Americans who spoke about the Greek genocide and the Armenian genocide of which he stated, "I am firmly convinced that this is the greatest crime of the ages".Morgenthau was the father of the politician Henry Morgenthau Jr. His grandchildren include Robert M. Morgenthau, District Attorney of Manhattan for 35 years, and Barbara W. Tuchman, a historian who won the Pulitzer Prize for her book The Guns of August. Source: Wikipedia (en)