Etymology and distribution of 井形.

Igata 【井形】^{レベル4
About 1,800}  The Japanese surnames etymology dictionary.

Tochigi-ken Utsunomiya-shi . A variant of 石下 . 石下 Ishige reference.

Ikata 【井形】^{レベル4
About 1,800}  The Japanese surnames etymology dictionary.

Hyougo-ken , Yamaguchi-ken , Okayama-ken .

① Hyougo-ken Tanba-shi Iseki Toshi ( Isou ) was a place name with a record since the Nara period. The place name was also written as "stone negative". Hyougo-ken Akashi-shi There is distribution in Uozumachi - shimizu.

② Okayama-ken Katsuta-gun Shouou-chou Origin of Ishi. A place name with a record since the Edo period. The place name also pronounced Ishi. Okayama-ken Katsuta-gun Shouou-chou There is distribution on the black soil. Ishi is in the same place.