Ōtomo Yoshinao

The Ōtomo clan claims descent from Emperor Seiwa (850-881) through the Seiwa Genji lineage of the Minamoto clan. Although the clan genealogy claims Yoshinao to be an illegitimate son of Minamoto no Yoritomo, it has been concluded that he was in fact a descendant of the Fujiwara clan, as the son of Kondō Yoshishige of the Kondō clan.[1]

Yoshinao's paternal uncle was Mutō Yorihira, and Yorihira's nephew (raised like his own son), Mutō Sukeyori, founded the Shōni clan. In addition, Kondō Kunihira, who was a gokenin of Minamoto no Yoritomo, was Yoshinao's second cousin, and the descendants of his younger brother, Tamura Nakanori, later became members of the Mizunoya clan.[6]

Ōtomo Yoshinao's descendants served as Governor of Buzen and Bungo Provinces for generations further establishing the power of Ōtomo clan in these two provinces.[1][7] The clan would expand their power in Bungo Province along with the Shiga clan, founded by Yoshinao's eighth son Shiga Yoshisato,[8][1] that had settled there earlier. Following the unrest of the Nanboku-chō period, the clan became an influential Shugo Daimyo family in Bungo, Buzen, and Chikugo Provinces during the Muromachi period. Yoshinaga, 19th generation descendant of Yoshinao, along with his son Yoshiaki further became Sengoku period Daimyos. At the time of 21st generation Yoshishige, the Ōtomo clan reached its zenith by expanding its power to Hizen, Higo, and Chikuzen Provinces.[1] At its zenith, the Ōtomo clan ruled six provinces (Buzen, Bungo, Hizen, Higo, Chikuzen and Chikugo) and two half-provinces (Hyūga and Iyo).[7]

Yoshinao's mother, Tone no Tsubone, was once a concubine of Minamoto no Yoritomo, and Yoshinao's adoptive father, Nakahara no Chikayoshi, was a close retainer of Yoritomo. There is a theory that Yoshinao was an illegitimate son of Yoritomo because of his relationship with her mother, and in Ōtomo genealogy, Yoshinao is inscribed as an illegitimate son of Yoritomo.

In addition, there is a theory that Tone no Tsubone never was a concubine of Yoritomo as it is not described in the records at that time such as the Azuma Kagami. In the Kōan era Ōtomo genealogy, Yoshinao's paternal lineage goes straight from Fujiwara no Hidesato to Yoshinari, and states no differing theories to this lineage. From this, it has been pointed out that there was no theory about Yoshinao being an illegitimate son of Yoritomo in the late Kamakura period.

Furthermore, it has been said that this theory was created after Yoshinao's 7th generation descendant, Ōtomo Yasushi, and all his brothers, were taken in by Ashikaga Takauji as nephews (raised like his own son) during Takauji's revival campaign in Kyushu.[9] There is a viewpoint that this theory was created to recall the memories about the relationship of Yoritomo and Yoshinao for the fictitious parent-child relationship of Takauji and the Ōtomo brothers.[10]

• Adoptive father: Nakahara no Chikayoshi
• Father: Kondō Yoshishige
• Mother: Tone no Tsubone (daughter of Hatano Tsuneie)
• Wife: Shinmyō (daughter of Hatakeyama Shigeyoshi)
  • Eldest son: Ōtomo Chikahide
  • Eighth son: Shiga Yoshisato
  • Son: Takuma Yoshihide
  • Son: Ōtomo Tokinao
  • Son: Motoyoshi Arinao
  • Son: Ōtomo Chikanao
  • Son: Ōtomo Satoyoshi
  • Son: Ōtomo Asanao
  • Son: Ichimada Tokikage
  • Son: Washio Hidenao
  • Son: Buzen Yoshimoto
  • Son: Nakahara no Yasuhiro
  • Daughter: Hōjō Tomotoki's wife

• Ōtomo clan
• Chinzei Bugyō