Mashiko no Masataka

The Mashiko clan genealogies name Mashiko no Masataka, second son of Ki no Sadataka, as the founding head of the Mashiko family of Mashiko village in Haga District, Shimotsuke Province.

He is called Ki Gon-no-kami, and the provincial gazetteer Shimotsuke-kokushi records that he built the clan's Saimyōji Castle during the Kōhei era of 1058–1065. His daughter married Fujiwara no Sōen, regarded as the founder of the Utsunomiya lords, binding the two houses together.