Emperor Yōzei

was the 57th Emperor of Japan, according to the traditional order of succession. His reign started in 876 and ended in 884.
Traditional narrative.
Before he became the monarch, his personal name ("imina") was .
Yōzei was the oldest son of Emperor Seiwa. His mother was the Fujiwara no Takakiko. She was the sister of Fujiwara no Mototsune.
Events of Yōzei's life.
Yōzei was made emperor when he was a young boy.
Yōzei was succeeded by his father's uncle, who became known as Emperor Koko. During the reign of Kōkō's son, Emperor Uda, the former emperor became dangerous again.
Yōzei lived in retirement until the age of 81.
After his death.
The actual site of Yōzei's grave is known. This emperor is traditionally venerated at a memorial Shinto shrine ("misasagi") at Kyoto.
The Imperial Household Agency designates this location as Yōzei's mausoleum. It is formally named "Kaguragaoka no Higashi no misasagi".
Eras of Yōzei's reign.
The years of Yōzei's reign are more identified by more than one Japanese era.
Legacy.
In ancient Japan, there were four noble clans, the "Gempeitōkitsu" (源平藤橘). One of these clans, the Minamoto clan (源氏) are also known as Genji, and of these, the "Yōzei Genji" (陽成源氏) are descended from the 57th emperor Yōzei.
Yōzei fathered nine sons who were born after his abdication.