The Jōkyū War: From an Order against Yoshitoki to Rokuhara and Oki

Kyoto contained the political and cultural worlds of emperors, retired emperors and court nobles. Go-Toba exercised retired imperial rule and was deeply involved in waka poetry, including the compilation of the Shin Kokin Wakashū. His political role and his cultural activity both belong to the history followed here; exile did not make the latter disappear.

In eastern Japan stood the Kamakura government established by Minamoto no Yoritomo. The emergence of warrior government did not immediately deprive the imperial court in Kyoto of all function. Negotiation as well as conflict linked the two centres. Describing them simply as an old authority already replaced by a new one would make the outcome seem settled before the events occurred.

The order would reach warriors connected through relationships formed since Yoritomo’s time. Looking only at a command issued in Kyoto is insufficient, but so is imagining Kamakura as an institution that had always been united. The connections among retainers and the political struggles within the shogunate are part of the setting in which the order was received.

Knowing the eventual result can make the shogunate’s advantage look inevitable. Before 1221, however, who would conduct government in Kamakura and how that government would relate to Kyoto had repeatedly been at issue. The earlier succession problems and negotiations help explain the circumstances of the conflict without inventing a plan or private intention for every participant.

In 1219, Minamoto no Sanetomo, the third shogun, was assassinated. The period in which Yoritomo’s sons succeeded as shogun came to an end, and the question of whom to bring to Kamakura became urgent. The succession was also a matter of negotiation with Kyoto, linking the internal needs of warrior government to relationships with the capital.

The shogunate sought a member of the imperial family, but those negotiations did not produce that result. The child who came from the Kujō family in Kyoto was Mitora, later known as Kujō Yoritsune. The young lord welcomed to Kamakura and the later shogun’s name belong to the same person, but the stages should not be collapsed into one moment.

Masako led politics in the position for which she became known as the nun shogun. Bringing in a young figure did not itself complete the daily work of making decisions or keeping retainers together. The people supporting the shogunal position still had responsibilities. The institutional explanation emphasizes Masako’s political activity beyond a simple family relationship.

The negotiations over an imperial successor and the later order against Yoshitoki took place within the same continuing relationship between Kyoto and Kamakura. The conflict of 1221 did not arise between two centres that had never previously negotiated. Recognizing those earlier contacts does not require assuming that one failed negotiation explains every subsequent act.

In this crisis, Masako is remembered as having urged the retainers to unite by recalling the benefits they had received from Yoritomo. The appeal to relationships formed under him is an important clue to how the Kamakura side came together. It connected the immediate danger with the basis on which retainers had supported the warrior government.

The familiar speech, however, cannot be reproduced as though every word had been verified at the scene. When words are transmitted through historical writing, the date and manner in which that writing was produced also matter. An account of Masako’s role and an exact recording of her voice are different kinds of historical claim.

The Azuma Kagami records events centred on the shogunate, but neither its compiler nor its year of compilation is firmly established. The National Archives’ explanation places its likely formation around 1300. It is therefore a historical compilation made after the Jōkyū War, rather than a text whose every passage can be treated as a contemporary transcript from 1221.

Recognizing Masako’s activity should be separated from turning the reported speech into the literal sound of that day. Without inventing dialogue, we can still consider the importance of invoking Yoritomo’s relationship with the retainers as a reason to support Kamakura. The illustration evokes the political role; it is neither an authenticated portrait nor a reconstruction of her feelings.

As the army approached the capital, rivers and bridges became places of battle. The Museum of Kyoto’s exhibition explanation introduces a scene in which the Kyoto and Kamakura sides face one another across the Uji River. The river thus provides a geographical setting for understanding the conflict without requiring a fabricated minute-by-minute account of a crossing.

Later illustrated narratives also offer evidence of how fighting was remembered and told. Their pictures cannot be substituted for photographs taken on the day. They do not independently establish every soldier’s position, the precise water level or the words exchanged. This account uses the institution’s explanation without claiming to have authenticated or copied an original illustrated scroll.

The Kyoto side was defeated and the attempt to bring down Yoshitoki failed. Shogunate forces entered the capital from which the order had been issued, and postwar measures began. What ended was the attempt directed against Kamakura’s leading figure. Kyoto itself did not cease to exist as a political centre, nor did the imperial court disappear with the defeat.

Would victory be followed by a return to the earlier relationship, or would responsibilities remain where the army had arrived? Turning from the fighting to Rokuhara makes the institutional consequences visible. The decisive issue for this narrative is not only which side prevailed, but how the victory became connected with the continuing work of government in Kyoto.

A single document offers another view of the postwar changes. The Kantō Gechijō introduced by Kawasaki City is dated to the thirtieth day of the eighth month of Jōkyū 3, or 1221, in the contemporary calendar. It records Yoshitoki ordering an exchange of two lands. The date is not silently converted to Gregorian August 30.

The lands named are Takaku Saigō in Hizen Province and Inage Honjō in Musashi Province. Places far apart were connected through a single decision. Inage Honjō was an estate associated with the area of present-day Nakahara in Kawasaki. The point here is the document’s specific relationship between lands, rather than an invented map of their exact medieval boundaries.

The municipal explanation introduces the document as evidence for the process by which Inage Honjō became Kantō goryō shortly after the war. An individual arrangement makes visible the work of deciding and administering landholding in which the shogunate was involved. The narrative follows the institution’s account without claiming an independent transcription of the original document or its signatures.

This example cannot be expanded into proof that all land was confiscated or treated in the same way. Its value lies in the particular decision it preserves: who ordered a disposition after the fighting and how a relationship between lands was changed. The conceptual scene of document handling does not portray an authenticated image of Yoshitoki or reproduce the written instrument.

The order against Yoshitoki led, through the retainers’ consolidation and the movement of the shogunate’s army into Kyoto, to defeat for the side that issued it. The imperial court itself did not vanish as a result. The outcome changed the relationship between political centres without making every earlier institution cease to exist.

After the war, court nobles and warriors continued within a political order in which the shogunate held the stronger position. A base remained at Rokuhara, and particular land decisions reflected shogunate authority. Victory became connected with governing what followed. The offices and the document provide different scales at which to examine that consequence.

Go-Toba’s life, meanwhile, moved to Oki. On the defeated side, cultural work continued through years spent away from the capital. Considering those years alongside the victors’ institutions gives the aftermath a wider scope. Neither the institutional changes nor the poetry needs to be explained by inventing an otherwise unrecorded emotional response.

An order naming one man, two commanders who entered the capital, responsibilities retained at Rokuhara, and a document recording an exchange of land can be read together. The Jōkyū War connects these different histories. Beyond the names of winner and loser, political work and individual lives continued, leaving evidence that extends the story beyond the days of combat.