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Hirayama Castle

平山城

Chiba

CastleHilltop castle (hirayamajiro)

A hilltop castle in Chiba.

Basic information

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Type: Castle
Setting: Hilltop castle (hirayamajiro)built on a low hill rising from the plainWikipedia (ja)
Keep (tenshu): No keep recordedno keep is recordedWikipedia (ja)
Main lords: Chiba Suketane (Iwahashi Suketane)Wikipedia (ja)
Remains to see: Earthen ramparts, MoatsWikipedia (ja)

People of this castle

Lord

Chiba Suketane (Iwahashi Suketane)

千葉輔胤(岩橋輔胤)

Member of a branch of the Chiba clan who took over the family after the main line was destroyed in the Kyotoku War, and with his son Noritane moved the clan's seat from Chiba to Sakura, building Moto Sakura Castle.

Castles nearby

Tatebori Castle1.3 km · No keep recorded

Ariyoshi Castle2.7 km · Not yet confirmed

Shiroyama Castle3.4 km · No keep recorded

Tabeta Castle3.4 km · No keep recorded

Shiinazaki Castle3.9 km · No keep recorded

Oyumi Castle4.2 km · Not yet confirmed

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Sources

1
Wikipedia「平山城 (下総国)」Wikipedia日本語版wikipediaChecked: 2026-10-03
2
Wikidata Q121354253WikidatawikidataChecked: 2026-10-03

Listing status

Candidate foundChecked
Confirmed as a castle siteChecked
Basic informationChecked
In-depth articleUnder review
Photo rights checkedChecked
Visit info checkedUnder review

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