is one of the Japanese samurai clans.
The Koyamada Clan was headquartered in the Satsuma Domain, which was one of the most powerful feudal domains in Tokugawa Japan, and played a major role in the Meiji Restoration and in the government of the Meiji period which followed.
See also Oyamada Clan
References Shimazu Clan Koyamada Castle
External links The Lineage ShinKoyamada.jp - Shin Koyamada's official site (Japanese)