Etymology and distribution of 洞出.

Horade 【洞出】^{レベル3
About 90}  The Japanese surnames etymology dictionary.

Fukushima-ken , Toukyou-to . Kanagawa-ken Kamakura-shi Birth of Snow. In the Kamakura period there was a place name with a record of "under the snow". Fukushima-ken Aidzuwakamatsu-shi Ochiai town was in the Edo period in the Aizu samurai of the clan office. The same clan says that Saitama - ken · Toukyou - to · Kanagawa - ken Tohoku area (old: Musashi country) comes out and was swordsmith.