Unno Nagauji

Unno Nagauji (died 1243) was a Kamakura-period head of the Unno clan in Shinano Province, a son of Unno Yukiuji, and is named in genealogies among the ancestors of the Sanada clan. He is said to have served the third shogunal regent, Hōjō Yasutoki.

The Shigeno genealogy calls his son Yukiharu 'Sanada Shichirō', the first appearance of the Sanada name, and scholars identify him with the Unno Saemon Tarō named in the Azuma Kagami in 1241.