Fujiwara no Mototsune
Japanese politician (836-891)

Fujiwara no Mototsune (藤原 基経; 836 – February 25, 891), also known as Horikawa Daijin (堀川大臣), was a Japanese statesman, courtier and aristocrat of the early Heian period. He was the first kampaku, a regent of an adult emperor, in Japanese history.
Biography
He was born the third son of Fujiwara no Nagara, but was adopted by his powerful uncle Fujiwara no Yoshifusa, who had no sons. Mototsune followed in Yoshifusa's footsteps, holding power in the court in the position of regent for four successive emperors.
Mototsune invented the position of kampaku regent for himself in order to remain in power even after an emperor reached maturity. This innovation allowed the Fujiwara clan to tighten its grip on power right throughout an emperor's reign.
Mototsune is referred to as Shōsen Kō (昭宣公) (posthumous name as Daijō Daijin).
Career
864 (Jōgan 6): Mototsune was named Sangi
866 (Jōgan 8): Chūnagon
870 (Jōgan 12, 1st month): He became Dainagon
872 (Jōgan 14): He was named Udaijin
876 (Jōgan 18): He was named Sesshō
880 (Gangyō 4): He was named Daijō Daijin
884 (Gangyō 8): Mototsune was the first to receive the title Kampaku.
890 (Kanpyō 2, 14th day of the 12th month): retire from Kampaku
February 25, 891 (Kampyō 3, 13th day of the 1st month): Mototsune died at the age of 56.
Genealogy
This member of the Fujiwara clan was the son of Fujiwara no Nagara, who was one of the brothers of Fujiwara no Yoshifusa.
The public source identifies “Fujiwara no Mototsune” as japanese politician (836-891). This brief keeps that definition visible, then builds a research path around Fujiwara, Mototsune and Japanese.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Fujiwara no Mototsune”, the useful work is to connect “japanese politician (836-891)” to the records capable of establishing context and consequence.
Chronology provides the most reliable spine for this subject; interpretation should follow only after identities and dates are secure. The source revision retrieved here is dated Jun 7, 2026. The linked authority identifier is Q1397196. VIAF identifies the subject as 41775300. The Library of Congress control number is nr2002010357. 2 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
Public reputation and documentary evidence do not always develop together; absence from a summary is not evidence of historical absence. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Read biographical claims against dates, named institutions and the cited references. Distinguish a subject’s later reputation from evidence produced during their lifetime.
- Establishing names and roles
- Building a first chronology
- Locating cited institutions
Personal papers, civil or court records, institutional files and the scholarship cited by the source.
Three-step research path
- Establish the record: confirm the title “Fujiwara no Mototsune”, its source revision and the description used here.
- Expand the search: follow Fujiwara no Mototsune primary sources, Fujiwara no Mototsune archive and Fujiwara research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Fujiwara no Mototsune”?
- Which primary records establish identity, chronology and institutional ties?
- Which claims depend on a single source or contested interpretation?
Search terms from this dossier
This entry incorporates text from “Fujiwara no Mototsune” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.