Shōchō

Overview

Shōchō (正長) was a Japanese era name (年号, nengō; "year name") that began in April 1428 and ended in September 1429. It followed the Ōei era and preceded the Eikyō era. The era fell within the Muromachi period, which spanned from 1336 to 1573. Two emperors reigned during this short span: Emperor Shōkō (称光天皇) and Emperor Go-Hanazono (後花園天皇).

The era lasted roughly seventeen months, making it one of the briefer nengō of the Muromachi period. Its brevity reflected the political turbulence of the time, as the shogunate and the imperial court both faced succession crises and social unrest.

What Defined the Era

The Shōchō era opened against a backdrop of dynastic uncertainty. Emperor Shōkō had been on the throne since 1412, but he had no surviving heirs. His health was failing, and the question of who would succeed him threatened to reignite the split between the Northern and Southern Courts, a division that had formally ended in 1392 but whose tensions lingered.

The era also saw the final years of the fourth Ashikaga shogun, Ashikaga Yoshimochi (足利義持). Yoshimochi had ruled the shogunate since 1394, but his authority had weakened in his later years. His death in the first month of 1428 removed a stabilising figure and opened a power struggle over the shogunal succession.

Social conditions compounded the political instability. Crop failures and famine had plagued the countryside in the preceding years, and the Shōchō era inherited those hardships. The combination of a succession crisis at the top and hunger at the bottom made the era a flashpoint for rebellion.

Key Events

In the first month of 1428, Ashikaga Yoshimochi died. His death triggered a contest over who would become the next shogun. After deliberation among the shogunate's senior retainers, the choice fell on Yoshimochi's younger brother, Ashikaga Yoshinori (足利義教), who assumed the shogunal title later that year.

The most significant event of the era came in the summer of 1428, when a massive peasant uprising broke out in the Kyoto region. Known as the Shōchō uprising (正長の土一揆, Shōchō no do-ikki), it began when debt-ridden farmers and small landowners rose against moneylenders and estate holders. The rebels demanded the cancellation of debts and the return of pawned land. The uprising spread rapidly through the capital and surrounding provinces, forcing the shogunate to issue a debt-cancellation edict (徳政令, tokuseirei) to quell the violence.

The Shōchō uprising was notable for its scale and its coordination. Peasants organised across estate boundaries, and their demands were explicit and economic rather than merely reactive. The shogunate's concession set a precedent: later uprisings would demand similar edicts, and the tokuseirei became a recurring tool of crisis management.

Emperor Shōkō died in the seventh month of 1428, only months after the uprising began. His death left the imperial throne vacant, and the succession question became urgent. The court ultimately chose a prince from a collateral branch of the imperial family, who ascended as Emperor Go-Hanazono in 1429. The transition was peaceful, but it required careful negotiation to avoid reopening the court schism.

In the ninth month of 1429, the era name was changed to Eikyō, marking the end of Shōchō. The change came as part of a broader political recalibration under the new shogun and the new emperor.

The Name in Japanese

The era name is written 正長 in kanji. The kana reading is しょうちょう, and the romaji is Shōchō.

The name consists of two characters:

• 正 (shō): This character means "correct," "right," or "proper." It carries connotations of justice, uprightness, and legitimacy. In compound words, it often appears with the sense of "true" or "exact," as in 正解 (seikai, "correct answer") or 正義 (seigi, "justice"). In the era name, it suggests a return to proper order.

• 長 (chō): This character means "long" or "leader." As an adjective, it denotes length in time or space, as in 長い (nagai, "long"). As a noun, it means "chief" or "head," as in 社長 (shachō, "company president") or 市長 (shichō, "mayor"). In the era name, it carries the sense of endurance and continuity.

Together, 正長 can be read as "proper and enduring" or "righteous longevity." The combination of moral correctness with temporal length was a common formula in era names, which were chosen to project stability and divine favour. The characters were selected by court scholars and presented to the emperor for approval, a process that treated the name itself as a form of auspicious declaration.

How the Era Name Works

The Japanese era name system, known as nengō (年号), dates to 645, when the first era, Taika, was proclaimed. Each era name is a two-character phrase that serves as a calendar label for a span of years. The system was borrowed from Chinese practice, where era names had been used for centuries to mark the reigns of emperors and to signal political renewal.

An era name could be changed for several reasons. A new emperor's accession usually prompted a new era, but changes also occurred to mark auspicious events, to avert misfortune, or to signal a fresh start after disasters. In the case of Shōchō, the era began in April 1428, likely to mark a new phase after the death of Shōkō's predecessor or in response to the ongoing crises. The era ended in September 1429, when the name was changed to Eikyō.

During the Shōchō era, the nengō was used to date official documents, legal records, and historical chronicles. A year within the era would be referred to as "Shōchō 1" (正長元年), "Shōchō 2" (正長二年), and so on. The system remained in continuous use until 1868, when the Meiji government adopted the practice of one era per emperor, a convention that continues today under the reign name Reiwa.