Emperor Reigen
Genealogy. Before Reigen's ascension to the Chrysanthemum Throne, his personal name ("imina") was ; and his pre-accession title was . Reigen was the 16th son of Emperor Go-Mizunoo. His mother was the daughter of Minister of the Center Sonomotooto (内大臣園基音), Lady-in-Waiting Kuniko (新広義門院国子). Reigen's Imperial family lived with him in the Dairi of the Heian Palace. This family included at least 13 sons and 14 daughters: His posthumous name was created during the Meiji Era by combining the "kanji" from the names of two previous Emperors, Emperor Kōrei (孝霊) and Emperor Kōgen (孝元). Events  of Reigen's life. Emperor Reigen's memory is honored and preserved at his designated Imperial mausoleum ("misasagi"), "Tsuki no wa no misasagi" at Sennyū-ji in Higashiyama-ku, Kyoto. His immediate Imperial predecessors since Emperor Go-Mizunoo – Meishō, Go-Kōmyō and Go-Sai are also enshrined along with his immediate Imperial successors, including Higashiyama, Nakamikado, Sakuramachi, Momozono, Go-Sakuramachi and Go-Momozono. Kugyō. is a collective term for the very few most powerful men attached to the court of the Emperor of Japan in pre-Meiji eras. Even during those years in which the court's actual influence outside  the palace walls was minimal, the hierarchic organization persisted. In general, this elite group included only three to four men at a time. These were hereditary courtiers whose experience and background would have brought them to the pinnacle of a life's career. During Reigen's reign, this apex of the "Daijō-kan included: Eras of Reigen's reign. The years of Reigen's reign are more specifically identified by more than one era name or "nengō".