Koyamura-yashiki is a site mentioned in the Shinputōki (1724) as the manor hall of Teźuka Mitsumori, a vassal of Kiso Yoshinaka in the 12th century. However, Edo period scholarship in this case may not be up to snuff, as modern scholars believe the Teźuka were based in an area of that name in modern Ueda Municipality, whay over the mountains (also, in the 1720s the Shiojiri-jin'ya was established very nearby; coincidence or propaganda effort?). Instead, some suggest that the manor was constructed by the Kanasashi clan of Shimo-Suwa, accessed via a short mountain pass. There are other castle and residence sites nearby, and Koyamura-yashiki is thought to predate these.
I visited the site of Koyamura-yashiki, a minor local site, as part of a castle walk. I began my castle walk for the day at Shiojiri Station. Once one passes over a bridge of the River Ta, the town of Shiojiri suddenly shifts to a more rural setting. No ruins remain of this fortified residence built on the terrace of the Ta River.
|English Name||Koyamura Yashiki|
|Founder||Teźuka Mitsumori (Legendary); Kanasashi Clan|
|Year Founded||Muromachi Period|
|Castle Type||Fortified Manor|
|Castle Condition||Ruins only|
|Historical Period||Pre Edo Period|
|Access||Shiojiri Station on the Chūō Main Line; 20 minute walk|
|Visitor Information||Private Property|
|Time Required||10 minutes|
|Location||Shiojiri, Nagano Prefecture|
|Coordinates||36° 6' 28.98" N, 137° 57' 53.35" E|
|Added to Jcastle||2021|
|Admin Year Visited||Viewer Contributed|
|Friends of JCastle|