Mizawa

The Mizawa of Izumo traced their line to Shinano Genji forebears, either the Kiso clan or the Iijima family. In the Jōkyū War of 1221 Iijima Tamemitsu was appointed steward of Mizawa manor. His descendant Tamenaga grew wealthy mining iron sand and working tatara furnaces, and built Mizawa Castle in 1305, after which the family took the Mizawa name.

They served the Yamana and later the Kyōgoku. In the Sengoku age they resisted the Amago: Tamekuni was defeated by Amago Tsunehisa in 1488, and a later head, Tameyuki, died fighting at Yoshida-Kōriyama in 1540. In 1561 the Mizawa submitted to Mōri Motonari, and Tamekiyo held firm against the Amago restoration armies.

In 1589 Tamekiyo's son Tametora was confined by Mōri Terumoto but later released with a fief in Nagato. The house survived the Edo period as senior retainers of the Chōfu domain.