Genchū

Overview

Genchū (元中) was a Japanese era name used by the Southern Court during the Era of Northern and Southern Courts. The era began in April 1384 and lasted until October 1392. It followed the Kōwa era. The reigning emperors during this period were Go-Kameyama in the south and Go-Komatsu in the north.

The era belongs to the Muromachi period, which spanned from 1336 to 1573. This was a time when two imperial lines, the Southern Court and the Northern Court, each claimed legitimate rule over Japan. The Genchū era falls entirely within this split, and its end in 1392 marks the formal reunification of the two courts.

What Defined the Era

The defining feature of the Genchū era was the ongoing rivalry between the Southern Court, based in Yoshino, and the Northern Court, based in Kyoto. The Southern Court traced its legitimacy through Emperor Go-Daigo, who had overthrown the Kamakura shogunate in 1333. The Northern Court was backed by the Ashikaga shogunate, which had established its rule in Kyoto in 1336.

By the time Genchū began in 1384, the Southern Court had been in decline for decades. Its military position had weakened, and its territory had shrunk to a small region in the mountains of Yoshino. The Northern Court, by contrast, held the capital and enjoyed the support of the Ashikaga shoguns. The era was therefore defined by a slow, grinding attrition of Southern Court power, culminating in the negotiated settlement that ended the era.

The era name itself was chosen by the Southern Court, which continued to issue its own era names in defiance of the Northern Court's calendar. This dual system of era names was a direct expression of the political split: two courts, two emperors, and two competing systems of time.

Key Events

In 1384, the Genchū era began with Emperor Go-Kameyama on the Southern throne. Go-Kameyama had succeeded his father, Emperor Go-Murakami, and his reign was marked by a steady loss of Southern strongholds to Northern forces.

The most significant event of the era came in 1392. The Ashikaga shogunate, under the third shogun Ashikaga Yoshimitsu, negotiated a peace agreement with the Southern Court. The terms promised that the imperial throne would alternate between the two lines, and that the Southern Court would receive certain lands and privileges. In October 1392, Emperor Go-Kameyama agreed to the terms and abdicated, returning to Kyoto and handing the regalia to the Northern Court's Emperor Go-Komatsu.

This agreement, known as the Meitoku unification, formally ended the Era of Northern and Southern Courts. The Genchū era ended with this unification, and the Northern Court's era name, Meitoku, became the sole era name for the reunified realm. The promise of alternating succession was later broken, but the political split itself was over.

The Name in Japanese

The era name is written 元中 in kanji. Its kana reading is げんちゅう, and its romaji is Genchū.

The name breaks down character by character as follows:

• 元 — read as gen (げん). This kanji means "origin," "beginning," or "foundation." It appears in words like 元日 (ganjitsu, New Year's Day) and 元気 (genki, healthy or energetic). In era names, 元 carries the sense of a starting point or a root cause.

• 中 — read as chū (ちゅう). This kanji means "middle," "within," or "center." It appears in words like 中国 (Chūgoku, China or the central region of Japan) and 中世 (chūsei, the medieval period). In this era name, 中 suggests the middle of something, or a state of being inside a boundary.

Together, 元中 can be understood as "the middle of the origin" or "within the beginning." The name likely reflects the Southern Court's self-image as the true origin of the imperial line, persisting in the middle of a divided realm. The reading Genchū follows the standard on-yomi (Chinese-derived reading) for both characters, with the first character's reading gen and the second character's reading chū combining into a single era name.

How the Era Name Works

A Japanese era name, or nengō (年号), is a system of numbering years by the reign of an emperor or the proclamation of a new era. The system was adopted from China in 645 CE, and each era name is chosen to convey a positive or auspicious meaning. An era name does not necessarily change when a new emperor takes the throne; it can change mid-reign due to auspicious events, natural disasters, or political shifts.

During the Era of Northern and Southern Courts, the system broke down. Both courts issued their own era names, and the same period of time could be referred to by two different names depending on which court one recognized. The Southern Court's era names, including Genchū, were used in its own territories and by its supporters. The Northern Court used its own sequence of names, such as Shitoku and Meitoku.

When the courts were unified in 1392, the Northern Court's era name, Meitoku, continued in use, and the Genchū era was retroactively recognized as part of the official chronology. Modern Japanese historical scholarship treats the Southern Court's era names as legitimate, and the Genchū era is listed in standard chronologies alongside the Northern Court's names for the same years. The era name system itself remained in continuous use until 1868, when the Meiji government switched to a single era name per emperor's reign.