Etymology and distribution of 井土下.

Idoshita 【井土下】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Oosaka-fu , Kumamoto-ken , Kyouto-fu . Terrain . From the new big road. Kyouto-fu Kyouto-shi In the northern ward of Shimoin-cho, I tell him that he was called the Heian era at the descendant of Mr. Fujiwara. 藤原 Fujiwara reference. There is a transmission that Mori Horibe got from Emperor Kashiwabara after the Muromachi period emperor. Location unknown. 堀辺 Horibe reference.