Nagahito, posthumously honored as Emperor Go-Sai, also known as Emperor Go-Saiin, was the 111th emperor of Japan, according to the traditional order of succession.
Tsuguhito, posthumously honored as Emperor Go-Kōmyō, was the 110th emperor of Japan, according to the traditional order of succession.
Emperor Go-Sai
…Momozono-no-miya. He was the eighth son of Emperor Go-Mizunoo. He was raised as if he were the son of Tōfuku-mon'in; both former Empress Meishō and former Emperor Go-Kōmyō were his older half-siblings. Emperor Go-Sai's Imperial family lived with him in the Dairi of the Heian Palace. This family included at least 16 sons…