Etymology and distribution of 石腸.

Ishiwata 【石腸】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Tochigi-ken Utsunomiya-shi . Tochigi-ken Haga-gun Ichikai-machi Origin of the city. A place name with a record since the Muromachi period. The place name tells that Mr. Shihana resides in 937 (Shingehei 7 years) and changed "market rope" as "shiyaka" and later wrote as "shiitake".