Yamaguchi

The Yamaguchi were a branch of the Murayama warriors who held Yamaguchi Castle in Musashi Province. In 1368 Yamaguchi Takakiyo joined the Kawagoe in rebellion against the Kamakura authorities, and his castle fell to Uesugi Noriaki.

In 1383 his son Takaharu rose again with Southern Court support, but was defeated and killed himself after burning the castle. His descendants served the Uesugi and then the Later Hōjō, before entering Tokugawa service after 1590.