Wang Tingzhu gathers his private troops and kills Tian Hongzheng together with over 300 of his staff and household. (Zizhi Tongjian (Comprehensive Mirror) 資治通鑑 卷242)
The Sanuki provincial office reports that repairs to the Manno Pond embankment are large in labor and short of manpower, so the work cannot be finished; it asks that the monk Kukai, a native of the region, be appointed bettō. Granted. (Nihon Kōki (Later Chronicles of Japan) 日本後紀 卷29)
Western Europe (4)
At the February assembly at Aachen the war with Riudewit is discussed, three armies are organized, and the question of the Spanish frontier is also decided. The Noviomagus assembly is set for May (Royal Frankish Annals ARF a.821, Kurze 1895 p.154)
After Easter the emperor goes up and down the Maas River by boat, reads again the kingdom division decided earlier, and confirms it by the oaths of the nobles. He receives envoys of Pope Paschal (Royal Frankish Annals ARF a.821, Kurze 1895 p.155)
Bornas, duke of Dalmatia and Liburnia, dies and his nephew Ladislavus succeeds him. The patriarch of Grado, Fortunatus, is accused of inciting Riudewit; he goes to Istria, then secretly flees by boat, explains his reasons for flight to the governor of Iadera (Zadar), and is sent to Constantinople (Royal Frankish Annals ARF a.821, Kurze 1895 p.155)
In mid-October at the Theodonis villa assembly, the eldest son Lothair marries Irmingard, daughter of Count Hugo. Papal envoys also attend, and the emperor pardons and restores Bernard's accomplices and Adalhard (Royal Frankish Annals ARF a.821, Kurze 1895 p.156)