Empress Kōken
In Nakamaro's rebellion of 764, Matate supported the winning side of Empress Kōken, and was promoted to and and granted honors, second-class. In 766, Matate was promoted to "dainagon", replacing Nagate, who had been promoted to "udaijin". Two months later, though, Matate died at the age of 52. He was given the burial of a , and posthumously promoted to "daijō-daijin".