Etymology and distribution of 子金.

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

Chiba-ken , Kanagawa-ken , Toukyou-to . Distribution including Jitakata too.

① Personal name . Kanagawa-ken Yokohama-shi In Toryuka- ku Kurakurada-cho I tell from Fujiwara real person who is a poet of the Heian era. There is a tradition that Mr. Horiuchi called from the name of the manor in the same place. 藤原 Fujiwara reference. 堀内 Horiuchi reference.

② Kagoshima-ken Kagoshima-shi Originated from the perspective of Yoshino-cho's small character. In the same era there was a real gate of the portrait system in the Edo period.