Etymology and distribution of 榛川.

Haikawa 【榛川】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Okinawa-ken Uruma-shi , Okinawa-ken Shimajiri-gun Kumejima-chou . Terrain . From before Okinawa-ken 's Kaneihisa family name. 兼久 Kaneku reference.

※ Okinawa-ken Kunigami-gun On'na-son birthplace of premiere. A place name with a record since the Kingdom of the Ryukyus. Ryukyuan sound is a meganic.

Harikawa 【榛川】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Wakayama-ken , Gifu-ken . Wakayama-ken Shinguu-shi Originated from the view of the Komonogawa- machi Nishikikiya underwater.