Region: Japan · Coordinates: 39.133, 141.133 · 4 events
| Year | Source | Account |
|---|---|---|
| AD 802 | Nihon Kōki (Later Chronicles of Japan) | With the land expanded by the government army's subjugation, 4,000 masterless men (rōnin) from Suruga, Kai, Sagami, Musashi, Kazusa, Shimōsa, Hitachi, Shinano, Kōzuke and Shimotsuke were ordered to be settled at Isawa Castle in Mutsu. |
| AD 802 | Nihon Kōki (Later Chronicles of Japan) | Tamuramaro, commissioner for the construction of Isawa Castle, reports that the Emishi chiefs Ōbaka-kimi Aterui and Banguke-kimi Moré surrendered with more than five hundred of their clan. |
| AD 802 | Nihon Kōki (Later Chronicles of Japan) | Tamuramaro, commissioner for building Isawa Castle in Mutsu, came to the capital with the two Ōbaka-kimi chiefs. |
| AD 814 | Nihon Kōki (Later Chronicles of Japan) | Report from Mutsu: the castles of Isawa and Tokutan are far from the provincial seat and stand alone beyond the frontier; the Tsugaru teki captives below the walls cannot be trusted. Permission was requested and granted to store dried rice and salt in advance. |