Japan Castle Atlas

Kamiizumi clan

上泉氏

Builder and lord records come from the Japan Castle Foundation list and Japanese Wikipedia.

Connected castles

Maebashi, Gunma

大胡城

photo: Qurren (トーク) Taken with Canon IXY 430F (Digital IXUS 245 HS)CC BY-SA 3.0Wikimedia Commons

LordRecord source: wikipedia