The Furuichi clan was a group of powerful kokujin (local lords) in Yamato Province, and both Ine FURUICHI, who was the founder, and Choin FURUICHI, who was the second generation head of the school (and a younger brother of Ine) were disciples of Juko MURATA.
古市氏は大和国の有力国人の一族で、流祖古市胤栄と二代古市澄胤（胤栄の弟）はともに村田珠光の弟子である。