The shōgun was both young and irresolute, and personally had neither weight nor influence. But his guardian, Hitotsubashi, was a man of mature years and judgment. He recognized the importance of obtaining the approval of the emperor to the foreign treaties, and of thus ending the long and ruinous agitation which prevailed in the country. A memorial(307) was presented to the emperor in the name of the shōgun, setting forth the embarrassment under which the administration of the country had been conducted on account of the supposed opposition of the emperor to the treaties, and begging him to relieve them by signifying his sanction; and assuring him that if this is not given, the foreign representatives who are at Hyōgo will proceed to the capital and demand it at his hands. It ended in the sanction of the treaties being signified October 23, 1865, by the following laconic decree(308) addressed to the shōgun: “The imperial consent is given to the treaties, and you will therefore undertake the necessary arrangements therewith.” During this critical time the Shōgun Iemochi died September 19, 1866, at his castle in Ōsaka at the age of eighteen. He had been chosen in 1858, in the absence of a regular heir, by the determined influence of Ii Kamon-no-kami, who was then all-powerful at Yedo. He was too young to have any predominating influence upon affairs. Until the assassination of the prime minister Ii Kamon-no-kami in 1861 the boy shōgun had been under his guardianship. Since then that duty had been devolved upon Hitotsubashi, a son of the diamyō of Mito, who had been himself strongly pressed for the office of shōgun, but who was alleged to be too mature and resolute a character for the prime minister’s purposes. As guardian, Hitotsubashi had taken an active part in the effort to obtain the sanction of the treaties, and the final success of this important step must in a great measure be attributed to him. After the death of Iemochi without direct heirs, the office of shōgun was offered to Hitotsubashi as a representative of Mito, one of the “honorable families” from whom a shōgun was to be chosen in case of a failure of direct heirs. It is said that he accepted the office with great reluctance, knowing the troubles which would surely await him who assumed it. He assented only on the command of the emperor and the assurance of support from many of the diamyōs. He has thus the distinction of becoming the last of the long line of Tokugawa shōguns, under the name of Tokugawa Yoshinobu.(309)