Fujiwara no Tadahira

Fujiwara no Tadahira
Fujiwara no Tadahira.jpg
Tadahira by Kikuchi Yōsai
Imperial Regent of Japan
In office
October 16, 930 – September 9, 949
Monarch Suzaku
Preceded by Fujiwara no Mototsune
Succeeded by Fujiwara no Saneyori
Personal details
Born 880
Died September 9, 949(949-09-09) (aged 68–69)
Heian Kyō (Kyōto)
Spouse(s) Minamoto no Junshi
Minamoto no Shōshi
Parents Fujiwara no Mototsune (father)

Fujiwara no Tadahira (藤原 忠平, 880 – September 9, 949) was a Japanese statesman, courtier and politician during the Heian period.[1] He is also known as Teishin-Kō (貞信公) or Ko-ichijō Dono (小一条殿) or Ko-ichijō daijō-daijin.[1]


Tadahira was a kuge (Japanese noble) who is credited with writing and publishing Engishiki.[1] He is one of the principal editors responsible for the development of the Japanese legal code known as Sandai-kyaku-shiki, sometimes referred to as the Rules and Regulations of the Three Generations.[2]

Tadahira served as regent under Emperor Suzaku who ruled from 930 to 946.

  • September 17, 914 (Engi 14, 25th day of the 8th month): Dainagon Tadahira was named udaijin.[3]
  • October 16, 930 (Enchō 8, 22nd day of the 9th month): Tadahira was appointed sesshō.
  • September 7, 936 (Jōhei 6, 19th day of the 8th month): He assumed the role of daijō-daijin.[4]
  • February 16, 937 (Jōhei 7, 4th day of the 1st month): He presided over the coming of age ceremony of Emperor Suzaku.[4]
  • November 29, 941 (Tengyō 4, 8th day of the 11th month): He became kampaku.[1]


This member of the Fujiwara clan was the son of Mototsune.[1] Tadahira's brothers were Fujiwara no Tokihira and Fujiwara no Nakahira.[5] Emperor Murakami was the maternal nephew of Tadahira.

Tadahira took over the head of the Hokke branch of the Fujiwara clan in 909 when his elder brother Tokihira died.

Wives and progeny

He was married to Minamoto no Junshi (源 順子), daughter of Emperor Uda.

They had a son.

He was also married to Monamoto no Shōshi (源 昭子), daughter of Minamoto no Yoshiari.

They had several children.

Daughters' mothers were unknown. (She might be Junshi or Shōshi.)

  • Kishi (貴子) (904–962) - consort of Crown Prince Yasuakira
  • Kanshi (寛子) (906–945) - consort of Imperial Prince Shigeakira

Selected works

In a statistical overview derived from writings by and about Fujiwara no Tadahiro, OCLC/WorldCat encompasses roughly 9 works in 13 publications in 2 languages and 201 library holdings.[8]

  • 延喜式 (1723)[9]
  • 延喜式 (1828)
  • Teishinkōki: the Year 939 in the Journal of Regent Fujiwara no Tadahira (1956)