Etymology and distribution of 石湯.

Ishiyu 【石湯】^{レベル3
About 50}  The Japanese surnames etymology dictionary.

Chiba-ken Isumi-shi , Kagawa-ken Mitoyo-shi , Kanagawa-ken .

① things . In Chiba-ken Isumi-shi Misato Ebato, a grasshopper string was created at Yanori , the warrior of the Heian period and Kamakura period, who lost in the battle of Ishibashi Yama, which was in 1180 (4 years old) at Kanagawa-ken Odawara-shi Tell them that you made it and gave you a bunch of straw.

② 市原 's variant. Kagawa-ken Mitoyo-shi Tokiwa -ken Yoshinogawa-shi Tokushima-ken Yoshinogawa-shi It is Aoki castle of Yamagawa Town and tells that Mr. Ichihara who was a castle owner during the Warring States period resides after the fall of the Azuchi Momoyama period of the same castle and renamed it. 市原 Ichihara reference.