Minamoto no Yoritomo

The writ issued in Kyoto

The imperial court appointed Minamoto no Yoritomo sei-i taishōgun on the twelfth day of the seventh month of Kenkyū 3 — 21 August 1192 by the Julian conversion behind the listed date. The surviving appointment text names him and bears that date.

Yoritomo was not present. He was in Kamakura, and the Azuma Kagami records that news of the appointment reached the city on the twentieth day of the seventh month.

The document traveled instead of the man

Opposition at court had stood in the way of the revived military title while Retired Emperor Go-Shirakawa lived. He died earlier in 1192, and the appointment followed.

There was no journey to Kyoto for investiture. Imperial messengers carried the writ to Kamakura, where it was presented at Tsurugaoka Wakamiya through Yoritomo's retainer Miura Yoshizumi.

The Azuma Kagami puts the messengers' arrival on the twenty-sixth day of the seventh month.

What the title did not create

Nothing changed in Kamakura by nightfall, because Yoritomo had not yet heard. The title gave an established warrior ruler court legitimacy; the governing offices and the nationwide shugo-jitō authority had developed before 1192.

Yoritomo was not the first man ever to bear the title — it had much older precedents, and Minamoto no Yoshinaka received it in 1184. He was the first Kamakura shogun.

Whether 1192 should be called the shogunate's founding year remains debated; proposed institutional starting points include 1180, 1183, 1185 and 1192.