Emperor Kōnin

was the 49th emperor of Japan, according to the traditional order of succession. Kōnin's reign started in 770 and ended in 781.
Traditional narrative.
Before he became the monarch, this prince's personal name ("imina") was 
Kōnin had five wives and seven Imperial sons and daughters.
Events of Kōnin's life.
After his death.
Emperor Kōnin is traditionally venerated at his tomb; the Imperial Household Agency designates "Tahara no Higashi no Misasagi" in Nara as the location of Kōnin's mausoleum.
Eras of Kōnin's reign.
The years of Kōnin's reign are more specifically identified by more than one era name ("nengō").