Etymology and distribution of 板石.

Itaishi 【板石】^{レベル2
About 40}  The Japanese surnames etymology dictionary.

Saga-ken , Fukuoka-ken , Nagasaki-ken . 井戸山 name surname. Kumamoto-ken Kumamoto-shi Meitoku-cho (Kitaiyama) in Kita-ku is a place name with a record since the Edo period. Saga-ken Saga-shi The inside of the castle was in the Edo period in the Saga Samurai of the Clan office. Nagasaki - ken Minamishimabara - shi Tell them that it is a pioneer in Namimoma - cho. 井戸山 Idoyama reference.