Etymology and distribution of 九千房.

Kusenbou 【九千房】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Ibaraki-ken Mito-shi , Mie-ken , Niigata-ken . Shizuoka-ken Yaidzu-shi Origin of Ogawa (Kogawa). A place name with a record since the Heian period. The place name was also written as "Ogawa". Mr. Ogawa on the same site pronounced Kogawa and also expressed it as "Mikawa." 小川 Ogawa reference. Ibaraki-ken Mito-shi Oe city is headquartered. Tell them that they are groundbreaking in the same place.