Etymology and distribution of 所川.

Shogawa 【所川】^{レベル3
About 60}  The Japanese surnames etymology dictionary.

Yamagata-ken Yonezawa-shi , Kanagawa-ken .

① Nagano-ken Kamiminochi-gun Ogawa-mura Originated by Kotoneyama Tateya. A place name with a record since the Edo period. It was in the Muromachi era for the castle owner of the same stone castle.

② Kyouto-fu Funai-gun Kyoutanba-chou Birth of Hatoya Tateya (Tachiya). It is distributed in the same place. My last name is Tachiya.

Shokawa 【所川】^{レベル3
About 60}  The Japanese surnames etymology dictionary.

Hokkaidou , Saitama-ken , Ishikawa-ken Wajima-shi . There is an example of using a "valley" for a store of a shop name.