Chapter 39: The Downfall of Catholicism in Japan
The mobilization in Japan had been undertaken with relative ease, with the various daimyo levying peasants and training them as arquebusiers or spear ashigaru in anticipation of their own armies sailing to Bireitou or Philippines. Indeed, Nobutomo would order the raising of the second wave, consisting of 50,000 troops from the Shimazu clan, Shikoku daimyo, and Oda vassals in central Japan and led by the daijo-daijin’s cousin once removed Miyoshi Yasutaka. However, events in Kyushu would interrupt the process of sending out more troops.
Unlike Spain, Japan did not pursue the forceful purging of all Spanish and Portuguese and only implemented the removal of Iberians from daimyo fief bureaucracies, although many left voluntarily due to the suspension of trade relations. Nevertheless, many long-term residents and Catholic priests continued to live in local Japanese communities. However, the actions of the Arima and Omura clans would cause Azuchi to reverse course. Due to their effectiveness and influence amongst not only the samurai but also the local populace, Arima Naozumi secretly kept many Jesuits and Franciscan priests in his service and influenced his juvenile relative Omura Suminobu to do the same. It didn’t take long before this act of defiance caught the eye of Azuchi, and in August 1631 both lords were summoned to the Oda capital. Both would be charged with treason and subsequently sentenced to death. As Catholics, they refused to commit seppuku so were instead beheaded.
Portrait of Arima Naozumi
Both the Arima and Omura clans were abolished, their lands redistributed to the non-Catholic Tachibana Muneshige (立花宗茂) and Hori Chikayoshi respectively. In response, many Catholic Arima and Omura vassals, now ronin, colluded with the remaining Jesuits and Franciscans and rebelled, joined by local Kirishitans across the countryside of northern Kyushu. They hoped to cripple the war effort against their Catholic brethren and restore the clans in the name of Christ. In what is now referred to as the Catholic Rebellion (カトリックの乱), the rebel army of 10,000, led by ex-Arima vassal Masuda Yoshitsugu (益田好次) [1], quickly secured his former master’s lands before marching on and capturing Nagasaki in early 1632. Upon news of the rebellion and the fall of Nagasaki, the second wave originally preparing for landfall in Bireitou would instead be directed at crushing the rebellion before more Kirishitans joined.
The Shimazu army of 12,000, led by the 19 year old clan head Norihisa (島津則久) came onto the scene first. Upon entering enemy territory, they experienced guerrilla warfare conducted by organized bands of Catholic peasants, many armed with arquebuses, and the Shimazu army found difficulty advancing towards Nagasaki. Certain vassals, in response to this resistance, urged Norihisa to wage total war against rebellious Catholics and pillage the homes of those whom they viewed as heretics. These retainers, led by Komagine Tomofusa (駒木根友房) [2], were actually among the handful of Calvinists in southern Kyushu, a small minority that had taken interest in the Dutch faith and voluntarily converted despite lack of Dutch interest in spreading Calvinism. Against the advice of more senior advisors, Norihisa decided to employ scorched-earth tactics against the local populace, laying waste to the region and demoralizing the enemy. This lasted a month before Miyoshi Yasutaka’s main force arrived on the scene and ordered the end of this devastating strategy.
Portrait of Shimazu Norihisa
The damage had been done, however, as the remaining rebel holdings filled with refugees escaping the destruction and became strained in resources. By April, the Shimazu navy had defeated the rebel ships and occupied the waters of Nagasaki, eventually forcing Yoshitsugu and the main army to retreat. On May 12th, they were defeated by Yasutaka’s main army of 40,000 at the Battle of Isahaya Plains (諫早平野の戦い). The rebel leaders were eventually captured and executed. Pockets of resistance remained, however, and for the rest of the year scattered Kirishitan riots would occur periodically throughout northern Kyushu.
The impact of the rebellion would be significant and far-reaching. Fearing the internal threat Catholicism presented to the realm, Nobutomo issued an edict with resounding support from the Sangi-shu that ordered the execution of all Spanish and Portuguese Catholic priests as well as collaborators. The edict also mandated the closure of all churches in Japan and prohibited organized Kirishitan activities, effectively banning Catholicism in the realm. Churches that refused to close were torched by local authorities, their priests put to death. In some instances, mass persecutions were even carried around. The rest of the 1630s would be marked by this Catholic suppression.
1632 execution of Catholic priests in the outskirts of Yamaguchi
However, Nobutomo would make an ecclesiastic exception in the shutdown after the churches in Azuchi and Gifu collectively petitioned the daijo-daijin and promised to formally separate from the Roman Catholic Church and no longer recognize the authority of the pope. Instead, the new Church of Yamato (大和国教会) would recognize a new patriarch in Azuchi, Takayama Sensaemon (高山洗左衛門) [3] as its new pontiff. The churches in central Japan were by now predominantly run by Japanese priests in sharp contrast to the more privileged and influential status of European priests in Kyushu. As a political compromise, these churches would also hand over non-Japanese priests to Azuchi.
Thus, despite the crackdown on Catholicism, a Japanese Christian denomination with nearly identical beliefs was born. Additionally, the edict did not apply to Calvinism. While many Kirishitan churches would join the new Church of Yamato, others, especially in Kyushu, rejected the Azuchi patriarch’s authority over the perceived betrayal of the Jesuits and other European priests and would face Azuchi’s crackdown and brutal repression. The Religious Control Edict (宗教抑制令), as it was known as, changed the religious landscape, virtually wiping Catholicism out institutionally and fragmented the rural Kirishitan population, with many even converting to Pure Land Buddhism. It would take a few decades before the new Church of Yamato put the pieces of a broken Christian faith back together with renewed fervor. However, the fracturing of Christianity in Japan also sowed the seeds for a new syncretic faith in the 17th century, one taking inspiration from the teachings of both Jesus Christ and Amitabha.
[1]: IOTL Amakusa Shiro’s (天草四郎) father
[2]: A Kirishitan general in the Shimabara Rebellion IOTL
[3]: Takayama Ukon's grandson