The Furuichi family was primarily in possession of a fief yielding 200 koku (crop yield), and the second head, Soan had the fief increased to 300 koku, and the following heads till the eighth head, Soan, served as chadogashira (a director in charge of maintaining tea utensils and performing the tea ceremony for a shogunate and domains); however Soan's misconduct caused the family's enfeoffment to be confiscated in 1832.
古市家は初め200石、2世宗庵は加増されて300石、以後8世宗安まで茶道頭を勤めるが天保3年（1832年）に不行跡により知行召し上げとなる。