Jidayu Koizumi

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Jidayu Koizumi (小泉次大夫, 1539 - 1624 December 8) was the Secretary of Water and Hatamoto magistrate of the early Edo period.

<i>Hatamoto</i> Japanese title

A hatamoto was a samurai in the direct service of the Tokugawa shogunate of feudal Japan. While all three of the shogunates in Japanese history had official retainers, in the two preceding ones, they were referred to as gokenin. However, in the Edo period, hatamoto were the upper vassals of the Tokugawa house, and the gokenin were the lower vassals. There was no precise difference between the two in terms of income level, but hatamoto had the right to an audience with the shōgun, whereas gokenin did not. The word hatamoto literally means "at the base of the flag", and is often translated into English as "bannerman". Another term for the Edo-era hatamoto was jikisan hatamoto (直参旗本), sometimes rendered as "direct shogunal hatamoto", which serves to illustrate the difference between them and the preceding generation of hatamoto who served various lords.

Edo Former city in Musashi, Japan

Edo, also romanized as Jedo, Yedo or Yeddo, is the former name of Tokyo. It was the seat of power for the Tokugawa shogunate, which ruled Japan from 1603 to 1868. During this period, it grew to become one of the largest cities in the world and home to an urban culture centered on the notion of a "floating world".