The Japanese surnames etymology dictionary.
Hokkaidou , Akita-ken , Kanagawa-ken . Akita - ken Minamiakita - gun Gojoume - machi Okawa - giguchi (Toyoguchi) is a place name with a record since the Sengoku period. The place name was also written as "Toyoguchi" and pronounced Toyonokuchi, Toiguchi, Hinokuchi and Higuchi. Akita-ken Kadzuno-shi Based in Towaji Horseuchi . It was in the Edo period in the same place. It is distributed in Ibaraki-ken . Ibaraki-ken Shimotsuma-shi Shimotsuma Kosho was in the Edo period as a shrine wife of the clan shrine .