Etymology and distribution of 五内川.

Gonaikawa 【五内川】^{レベル3
About 200}  The Japanese surnames etymology dictionary.

茂原 Mohara reference.

Gonaigawa 【五内川】^{レベル3
About 200}  The Japanese surnames etymology dictionary.

Kagoshima-ken , Niigata-ken , Toukyou-to .

① Topography . "Hara" is added to heaviness which is the surname of Amagi archipelago of Kagoshima-ken . Estimated at the time of returning to Japan in 1953. 重 Shige reference.

② Aichi-ken Kariya-shi · Originated from Shirahara , Chiryu City. A place name with a record since the Kamakura period. The place name was also written as "Shigirihara", "Shobara".