Kusuko Removed from Office
Emperor Saga removes Fujiwara no Kusuko from her court office as the confrontation with Heizei's faction reaches its crisis.
Permanent historical records · Updated 2026-11-03
810 in Japan
Explore 7 historical events and records for Japan in 810.
Historical records for Japan in 810
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Attempted Move to the Eastern Provinces
Heizei attempts to leave Nara with supporters and seek military backing in the eastern provinces, but forces loyal to Saga block the plan.
Heizei Takes Buddhist Tonsure
After the failure of his political challenge to Emperor Saga, Heizei takes the tonsure and becomes a Buddhist monk.
Order to Restore Capital to Heijo
Heizei's faction attempts to move the imperial capital back from Heian-kyo to the old capital at Heijo-kyo.
Prince Takaoka Removed as Crown Prince
After the crisis, Heizei's son Prince Takaoka is removed as crown prince and replaced by Prince Otomo, the future Emperor Junna.
Saga Recalls Heizei Officials
Emperor Saga recalls officials serving the retired Heizei and moves to reassert control over the central administration.
Two Imperial Courts
Heizei continues intervening in state affairs from Nara, creating a political situation later described as two competing imperial courts.
How these records were prepared
Generated from the World History Database historical_events table. Identical display records are collapsed; descriptions otherwise retain the stored text. Coverage and source quality vary. Check primary and specialist sources before citing individual historical claims.