Mitsui Hachirōemon

When the first son of Kita branch be too young to inherit the position from his father, one of his uncles or male cousins would be selected to fill in for a limited period of time, but they did not count him as a Hachirōemon.

In 1733, he was appointed Kan'emon (勘右衛門), and inherited the Kita branch while his father's Takafusa became a Buddhist monk the following year.

However, as Takayoshi incurred a large amount of debt from Ōmotokata (大元方) by spending too much on personal art collection as well as making huge donations to Saikyō-ji [jp] Temple, his title of Hachirōemon was passed to Takafusa in 1747 through the intentions of his younger brother Takahisa, who was the head of the Shinmachi representing the interest of the extended Mitsuis at the time.

Nonetheless, however, it was discovered that Takayoshi secretly borrowed money from Ōmotokata, and in the same year on 13 November, his successor, Takakiyo (then Shinpachi), decided to disown him officially: an application form was filed to the city financial officials on the 27th of the same month, in which Takakiyo signed the consent of 87 businessmen and employees that his uncle Takahisa would act as Hachirōemon.

Mitsui Takayoshi (三井 高福, 14 November 1808 – 20 December 1885) was a Japanese businessman during the Bakumatsu and the early Meiji period.

During the Bakumatsu reformation, Takayoshi was able to move between the Tokugawa shogunate and the Imperial court, and helped establish the foundation of the Mitsui zaibatsu.

In 1859, he served as a money purveyor for the places of the Gaikoku bugyō, and after the Meiji Restoration, he worked on several aspects of the banking administration of the government.

In the area of approximately 13,500 tsubo (44,631 m2), the Noh stage, the garden, and the tennis court among others were established, and Jo-an, which would later be a National Treasure, was relocated there.

In 1908 Mitsui Takamine allied with a visiting U.S. business delegation to assist in resolving The Panic of 1907 and the unstable Stock Market in the United States.

[8][9] His wife Toshiko (鋹子, 1901 – 1976) was the daughter of Matsudaira Yasukata, the 18th head of the Echizen-Matsudaira clan who ruled the Fukui Domain.