Prince Tokugawa Iesato (徳川 家達, August 24, 1863 – June 5, 1940) was the first head of the Tokugawa clan after the overthrow of the Tokugawa bakufu, and a significant figure in Japanese politics and diplomacy during the Meiji, Taishō and early Shōwa period Japan. When Prince Tokugawa travelled to other nations representing Japan during his diplomatic journeys, he usually presented his name being Prince Iyesato Tokugawa. Prince Tokugawa held the influential position of president of Japan's upper house of congress the Diet for 30 years. Tokugawa promoted democratic principles and international goodwill. It was only after his passing in 1940 that Japanese militants were able to push Japan into joining the Axis Powers in WWII.