Izushi Domain

A clan based in Izushi, Izushi County, Tajima Province (Toyooka City, Hyogo Prefecture). In 1595 (Bunroku 4), Koide Yoshimasa entered the clan from Tatsuno, Harima Province (Hyogo Prefecture) with a fief of over 60,000 koku. In 1604 (Keicho 9), his eldest son Yoshihisa succeeded him, and he divided over 10,000 koku of his fief to his uncle Mitsumasa, giving him a fief of 50,000 koku. In 1613, Yoshihide's younger brother, Yoshichika, succeeded him, but in the 19th year (Genwa 5), ​​Yoshihide returned from Kishiwada again, and the line was succeeded by Yoshishige, Fusayasu, Fusaeki, Hidenaga, and Fusatsugu, but the line came to an end in 1696 (Genroku 9) when Hideoki died young. The following year, Matsudaira (Fujii) Tadachika entered the domain from Iwatsuki in Musashi Province (Saitama Prefecture) with a stipend of 48,000 koku, and in 1706 (Hoei 3), Sengoku Masaaki entered the domain from Ueda in Shinano Province (Nagano Prefecture) with a stipend of 58,000 koku, and his fiefs covered four counties in Tajima, Izushi, Yabu, Keta, and Mikumi, and two counties in Harima, Kato and Kasai. Masafusa, Masatatsu, Hisayuki, Hisamichi, Masayoshi, Hisari (whose fief was reduced to 30,000 koku), and Masakata succeeded him until the abolition of the feudal domains and establishment of prefectures (1871). The Koide clan originally served Toyotomi Hideyoshi, and Yoshimasa sided with the Tokugawa clan in the Battle of Sekigahara and was granted confirmation of his original territory. The Sengoku clan also served Hideyoshi and was a Tozama daimyo clan that later sided with Tokugawa Ieyasu. During his 45 years in power, Sengoku Masatatsu worked to promote education, promoted sericulture and silk weaving, and especially encouraged the manufacture of ceramics, achieving great results. However, Izushi Town suffered a major fire and flood damage, and public order became unstable. After Masayoshi's death, during the Tenpo era (1830-1844), a family turmoil known as the Sengoku Disturbance broke out over his succession. The shogunate found fault with the facts, punished senior elder retainer Sengoku Sakyo and others who had attempted to usurp the lord's family, and halved the Izushi clan's rice yield to just over 30,000 koku, which continued until the beginning of the Meiji era.

[Shigeru Kobayashi]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

但馬(たじま)国出石郡出石（兵庫県豊岡市）を本拠とする藩。1595年（文禄4）播磨(はりま)国（兵庫県）龍野(たつの)より小出吉政(こいでよしまさ)が6万石余で入部、1604年（慶長9）嫡子吉英(よしひさ)が継ぎ、所領のうち1万石余を叔父三尹(みつまさ)に分封し5万石を領有。1613年吉英の弟、吉親(よしちか)が継いだが、19年（元和5）ふたたび吉英が岸和田(きしわだ)から戻り、吉重、英安(ふさやす)、英益(ふさえき)、英長(ふさなが)、英及(ふさつぐ)と続いたが、1696年（元禄9）英及が夭折(ようせつ)したので断絶した。翌年、松平（藤井）忠周(ただちか)が武蔵(むさし)国（埼玉県）岩槻(いわつき)から4万8000石余で入部、1706年（宝永3）仙石政明(せんごくまさあきら)が信濃(しなの)国（長野県）上田から5万8000石余で入部、所領は但馬の出石、養父(やぶ)、気多(けた)、美含(みくみ)の4郡、播磨の加東(かとう)、加西(かさい)の2郡に及んだ。政房、政辰(まさとき)、久行、久道、政美、久利（3万石に減封）、政固と継いで廃藩置県（1871）に及んだ。小出氏はもと豊臣(とよとみ)秀吉に仕え、吉政は関ヶ原の戦いに徳川方に属して本領安堵(あんど)された家筋、仙石氏も秀吉に仕え、のち徳川家康に帰属した外様(とざま)大名筋であった。仙石政辰は藩政45年間、文教の普及に努め、養蚕業、絹織物業を盛んにし、ことに陶磁器の製造を奨励するなど治績をあげた反面、出石町の大火や水害を被り、治安は動揺した。政美の没後の天保(てんぽう)年間（1830～44）に、その後継をめぐって仙石騒動という御家騒動が起こった。幕府は理非をただして、主家を奪おうとした家老上席仙石左京らを罰するとともに、出石藩の石高を3万石余に半減し、明治初年に至った。

［小林　茂］

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