Etymology and distribution of 鐵屋.

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

Ibaraki - ken Naka - shi. 萩谷 Last name available. 萩谷 Hagiya reference. Ibaraki-ken Mito-shi Sannomaru was in the Edo period in the Mito samurai of the Clan office.