Koyamada clan

. The five branches were as follows:

*One claimed descent from the Taira clan. One famous descendant was the Sengoku period samurai general Oyamada Nobushige.
*One was descended from the Usa clan.
*One claimed descent from the Northern Fujiwara by way of Uesugi Shigefusa.
*One claimed descent from the Northern Fujiwara by way of Onomiya Saneyori.
*One claimed descent from the Northern Fujiwara by way of Kikuchi Noritaka.

References

*ja icon [http://www2.harimaya.com/sengoku/html/oyamada.html "Oyamada-shi" (Taira descent) on Harimaya.com] (accessed 28 August 2008)