In the second month, on day 庚申, the Tsushima people who killed Tachino Masamine and burned the official residence and houses are referred to the criminal court (keikan) for trial. (Nihon Montoku Tennō Jitsuroku 日本文德天皇實錄 卷第十 「天安二年」 2月(閏))
In the second month, on day 丙辰, Higo province reports that the drum in the armory (heiko) of the Kikuchi castle sounded by itself; it sounded again the next day. (Nihon Montoku Tennō Jitsuroku 日本文德天皇實錄 卷第十 「天安二年」 2月(閏))
In the fourth month, on day 庚子, the rain that had continued from day 壬辰 to day 己亥 this month finally stops (the rains before the great flood of day 壬午 in the fifth month). (Nihon Montoku Tennō Jitsuroku 日本文德天皇實錄 卷第十 「天安二年」 4月)
In the fifth month, on day 壬午, heavy rain floods the rivers; water from the Dōkutsu River enters the Reizen-in, and the left and right capitals suffer flood damage with many drowned. (Nihon Montoku Tennō Jitsuroku 日本文德天皇實錄 卷第十 「天安二年」 5月)
In the sixth month, on day 丁未, Dazaifu reports that on the first day of the fifth month a great wind and heavy rain destroyed all official residences and damaged nine provinces and two circuits (on the same day the armory of Kikuchi castle also burned). (Nihon Montoku Tennō Jitsuroku 日本文德天皇實錄 卷第十 「天安二年」 6月)
In the eighth month, on day 乙卯, Emperor Montoku dies at the Shinsei-den; earlier, on the night of day 辛亥, he suddenly fell ill, and on day 壬子 the illness became severe and he could no longer speak. (Nihon Montoku Tennō Jitsuroku 日本文德天皇實錄 卷第十 「天安二年」 8月)
In the ninth month, on day 甲子, at night, the late emperor (Daikō-tei) is buried at the Tamura mausoleum; earlier, on day 庚申, the site of Maharaka hill in Tamura village, Kadono district, Yamashiro, was fixed as the mausoleum site. (Nihon Montoku Tennō Jitsuroku 日本文德天皇實錄 卷第十 「天安二年」 9月)
Emperor Montoku dies on the twenty-seventh day of the eighth month at the Shinsei-den of the Reizen-in. The palace guard generals guard the crown prince's quarters and hand the divine seal, the precious sword and other regalia to the crown prince. (Nihon Sandai Jitsuroku 卷第一 天安2年8月 (원문 1.4))
On the seventh day of the eleventh month, Emperor Seiwa (age nine) ascends the throne at the Daikyokuden and proclaims an edict. (Nihon Sandai Jitsuroku 卷第一 天安2年11月七日 (원문 1.62))