Jou Ian Yashiki

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Jō-Ian-yashiki was the fortified residence of the Jō Clan (literally ‘Castle Clan’), and the lord was Jō Keimo, also called Jō Ian, who lived in the late Sengoku period. These names sound foreign; in Chinese ‘城’ means ‘town’ or ‘city’, as in a large, walled settlement. And so I imagine the Jō were a clan with continental origins. Interestingly, Jō Ian originally served Uesugi Kenshin but defected to Kai where he became a vassal of Takeda Shingen. Jō Ian appears in the 「武田家将士起請文」, a document listing military leaders of Takeda forces.

Visit Notes

No definitive ruins remain of Jō-Ian-yashiki, a medieval fortified resident site in Kamikanogawa, Yamanashi Municipality, and the site is now housing. Down a foot path I found a waterway, like an irrigation ditch, and this is thought to be a former moat; perhaps with the path included it would indeed be just wide enough for a simple moat.

  • Old waterway suggested as the remains of a moat

Castle Profile
English Name Jou Ian Yashiki
Japanese Name 城伊庵屋敷
Founder Jō Ian
Year Founded Late Sengoku Period
Castle Type Fortified Manor
Castle Condition Ruins only
Historical Period Pre Edo Period
Features water moats
Visitor Information
Access Yamanashi Station on the Chūō Main Line; 10 minute walk
Visitor Information Access Limited
Time Required 10 minutes
Location Yamanashi, Yamanashi Prefecture
Coordinates 35° 41' 9.67" N, 138° 41' 24.76" E
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Added to Jcastle 2022
Contributor ART
Admin Year Visited Viewer Contributed
Friends of JCastle
Oshiro Tabi Nikki

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