Sadayori Nagai

Sadayori Nagai was a warrior of the late Kamakura and Northern and Southern Courts era, the fourth head of the Nagai house of Bingo province. He served the Kamakura shogunate, then after the Kenmu Restoration of 1333 followed Ashikaga Takauji, acquiring manor stewardships in several provinces alongside his Bingo lands.

When the Kannō Disturbance threw Bingo into disorder after 1351, he sent reinforcements to the provincial shugo. In 1363 he fought Ashikaga Tadafuyu's party at Miyauchi in Bingo and was killed.