Etymology and distribution of 五ケ谷.

Gokaya 【五ケ谷】^{レベル3
About 80}  The Japanese surnames etymology dictionary.

Yamaguchi-ken , Hiroshima-ken , Okayama-ken .

① We are close to the name of male. In the Yamaguchi-ken Yanai-shi daylight, tell Yamaguchi-ken Shimonoseki-shi the descendant of the Heike Fraterd who retired after the battle of Dannoura which was in 1185 (2 years old year and 4 years old). 平 Taira reference.

② Okayama-ken Tsuyama-shi Originated from the actual close proximity of Yokono's Yokono. It was in the Edo period in the same place.