Katsu Kaishū

Count Katsu Yasuyoshi , best known by his nickname Katsu Kaishū , was a Japanese statesman and naval engineer during the late Tokugawa shogunate and early Meiji period. Kaishū was a nickname which he took from a piece of calligraphy by Sakuma Shōzan. He went through a series of given names throughout his life; his childhood name was Rintarō (麟太郎). He was often called Awa (安房) from his title Awano-kami (安房守) during the late Tokugawa shogunate and later changed his name to Yasuyoshi after the Meiji Restoration.