Nagaya was a politician of the Nara period and an imperial prince of Japan, a son of Prince Takechi. His father was Prince Takechi and his mother Princess Minabe. He married Princess Kibi. He was substantially influential in politics owing to his membership of the Imperial family of the most noble birth, and there were no other competitive Imperial members at that time. A large residence was allocated to him in a prestigious part of Heijō-kyō. The Fujiwara clan were the most powerful competitors of Nagaya. Fujiwara no Fuhito, the leader of the house, had been the most powerful courtier in the court in the days when Japan was under the reign of Empress Genshō, a cousin of Nagaya's. After Fuhito's death in 720, Nagaya seized complete power within the court. This power shift was the source of later conflicts between him and Fuhito's four sons in the reign of Emperor Shōmu. In 729, the four sons charged him with a false crime and Nagaya received the death penalty. He was forced to commit suicide. His wife, Princess Kibi, and his children were killed at the same time.
Fujiwara no Nagako, daughter of Fujiwara no Fuhito
*Prince Asukabe
*Prince Kibumi
*Prince Yamashiro
*Princess Kyōshō, a nun
Abe no Ōtoji
*Princess Kamo
Princess Chinu
*Princess Madokata
Nagaya's Curse
It is said that, as Prince Nagaya was forced to die unreasonably, he bore a grudge against the living after his death. The following are believed to have been the victims of Nagaya's curse: Muchimaro, Fusasaki, Maro and Umakai, responsible for the prince's death, caught smallpox one after another and eventually all of them died during a major Japanese smallpox epidemic in 737.
In 1988, the former site of Nagaya's residence was discovered with many wooden tablets and historicrelics on the construction site of a Sogodepartment store. Sogo did not care and continued construction. Twelve years after the store's completion, Sogo went bankrupt.