Etymology and distribution of 小鐵.

Kotetsu 【小鐵】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Niigata-ken Kashiwazaki-shi , Hokkaidou , Toukyou-to . Kyouto-fu Kyoutango-shi Birth of Kumihama-cho Shinada ( Hongde ). A place name with a record since the Kamakura period. Niigata-ken Kashiwazaki-shi It was in the Edo period in Arashi. At Chiba-ken Kamagaya-shi Nakazawa, I will tell you that Mr. Tokita stated. Estimated in the Edo period. 時田 Tokita reference.