Daijo Sukemoto
Daijo Sukemoto (died c. 1227), also called Baba Sukemoto, was a warrior and gokenin of Hitachi Province at the turn of the thirteenth century, regarded as the founder of the Daijo house. The Azuma Kagami first names him in 1190, in the vanguard when Minamoto no Yoritomo entered Kyoto. In 1193, after Taki Yoshimoto fell from power, Yoritomo granted him Yoshimoto's lands and appointed him Hitachi Daijo.
In 1214 he became jito of Hitachi-Fuchu. His heirs inherited the Daijo office, from which the family took its name.