Ihori 【井堀】4 The Japanese surnames etymology dictionary.
① Originated from Okayama-ken Okayama-shi · Akaiwa City (formerly Iwanashi County). Place name with a record in 788 (7 years of age). The place name was also written as "Iwashi" and there was also pronunciation of Iwanasu. Meaning "Mr. Fujiwara of Iwashi-gun". Okayama-ken Okayama-shi Kita Ward Marunouchi was in the Edo period in the Clan Okayama of the Clan office. The same clan says Okayama-ken Okayama-shi as a descendant of Mr. Fujiwara from Takashima, Naka-ku. 藤原 reference.
③ Korea type . Thing . "Rock" is used from Gyeongju Lee's founder's tradition of Gyeongju city, Korea's Republic of Korea. It was Shizuoka-ken Shizuoka-shi and was in Commuter name in 1980. The real name is Li. 李 reference. 岩本 reference.