Etymology and distribution of ハガグ.

Hagagu* 【ハガグ】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Yamaguchi-ken , Kumamoto-ken , Nagasaki-ken . Creation . In Nagasaki-ken Hirado-shi , when sailing in the vicinity of Enoshima of Nagasaki-ken Hirado-shi , people told me that they heard the words "people rise and abound more and more when they pick up fish" as they sail from the sea. Later, "from more and more rich and prosperous" in 1742 (2nd year of Ryosan) Nagasaki-ken Hirado-shi rock onokamachi is given from the Hirado lord of the han.