Koizumi clan

The Koizumi clan were a family of daimyo that ruled over the Shimokaku province. Shimokaku their only province, was a small province located in between the Nagato and Suō provinces.

Sengoku period
The Koizumi clan specialized in polearms, mostly the Yari and Naginata, and later, adopted the use of matchlocks for their Ashigaru.

Units and Armies with a red coloured Koizumi kamon were those who had ranks higher than everyone else with exception to the Koizumi family. They were usually retainers of Koizumi Generals and the Daimyo.

The Koizumi clan welcomed Nanban traders in their ports

The Koizumi clan participated in the Battle of Sekigahara as part of the Western forces, although defeated, they continued to rule over the Shimokaku domain.

Edo period/ Meiji Restoration
The Shimokaku Domain, was a Japanese domain of the Edo period.

Fueled by hatred towards the Tokugawa Shogunate, during the Boshin war, the Shimokaku Domain sided with the Emperor and was controlled by the Koizumi Family.

Units and armies in the Shimokaku Domain wearing grey coats are those that have high positions in the Clan, usually those descended from the same families as those who were retainers of the clan during the Sengoku period.

Family members

 * Koizumi Tarou
 * Koizumi Yuudai
 * Koizumi Akemi

Important Retainers

 * Kitagawa Yuzuki
 * Tokuda Masaru
 * Tokuda Yumiko
 * Gorou
 * Kawaguchi Nobu

Other notable members

 * Hirako Tsukino
 * Tsukada Minoru
 * Kozakura Daichi
 * Hirako Tsukino
 * Gustavo Ferrerio

Family members

 * Koizumi Isamu
 * Koizumi Kazuko

Important Retainers

 * Mizushima Hideo
 * Tokuda Takumi
 * Himura Katsuo
 * Hideyoshi
 * Casimir St Pierre
 * Thomas Dyson

Other notable members

 * Kawaguchi Rokurou
 * Tokuda  Atsuko
 * James Williams Ross