Chris Perry, Author

Tag: Tensho Earthquake 1586

  • The Third Unifier – Tokugawa Ieyasu. Part Five.

    The Third Unifier – Tokugawa Ieyasu. Part Five.

    By 1584, two years had passed since the Honnoji Incident and the death of Oda Nobunaga. His eldest son, Nobutada, had died alongside him at Honnoji, leaving several younger sons as potential successors. The problem was that none of these sons had much in the way of military resources with which to stake their claim, and they quickly formed alliances, or else became puppets of Nobunaga’s more powerful retainers, most notably Toyotomi Hideyoshi (still going by Hashiba at this time) and Shibata Katsuie.

    Hideyoshi carries Sanboshi during the Kiyosu Conference.

    In the immediate aftermath of Honnoji, a conference was held at Kiyosu Castle to decide which son would inherit his father’s lands. In the event, Hideyoshi used his influence to ensure that Nobunaga’s grandson, the three-year-old Hidenobu (also called Sanboshi), would be named as the new head of the Oda Clan, whilst Nobunaga’s territories were divided up between his remaining sons and most powerful retainers.

    It will come as no surprise that Nobunaga’s surviving adult sons were not thrilled about this, and it wasn’t long before rival camps were forming around one son or another. Initially, despite his earlier support of Sanboshi, Hideyoshi decided to back Nobunaga’s second son, Oda Nobuo, whilst Katsuie supported the third, Nobutaka.

    Oda Nobuo (left) and Oda Nobutaka, brothers, but rivals for their father’s position.

    Despite nominally supporting one Oda heir or the other, in reality, the rivalry was between Hideyoshi and Katsuie, and tensions rose sharply until the Battle of Shizugatake in June 1583. There, Hideyoshi won a decisive victory, and shortly afterwards, Katsuie and Nobutaka committed suicide, removing a serious obstacle on Hideyoshi’s road to power.

    Despite being on the ‘winning’ side, it wasn’t long before Oda Nobuo fell out with Hideyoshi, and in early 1584, he went looking for support. It’s at this point that Tokugawa Ieyasu reenters the story. Despite trying to stay on good terms with Hideyoshi, sending him congratulatory gifts after his victory at Shizugatake, for example, it was becoming obvious that Ieyasu was too powerful for Hideyoshi to simply leave alone.

    A 19th-century depiction of the Battle of Shizugatake

    The flashpoint came in March 1584, when Nobuo had a retainer who had been colluding with Hideyoshi executed. Using this pretext, Hideyoshi raised an army and marched on Nobuo, who appealed to Ieyasu for help. Ieyasu obliged and dispatched forces into Nobuo’s home province of Owari.

    What followed was what history records as the Battle of Komaki-Nagakute, which is misleading because it was actually a series of battles, only two of which took place anywhere near the eponymous locations. The momentum of the campaign swung back and forth throughout the spring and summer. Despite a considerable advantage in resources, Hideyoshi was unable to bring them to bear, resulting in a stalemate.

    An 18th-century depiction of the Battle of Komaki-Nagakute. Despite the name, it was actually a series of battles fought across central Japan.

    With success on the battlefield impossible, both sides sought diplomatic support from other clans, with Ieyasu reaching out to the Hojo and Chosokabe, whilst Hideyoshi gained the support of the Uesugi, Mori, and Satake. Even with these allies, the stalemate persisted, and the only option was to negotiate, and both sides sat down to talk in November.

    Though he had not achieved a military victory, the negotiations favoured Hideyoshi; he forced Nobuo to submit and cede several territories, whilst those who had supported Ieyasu found themselves either isolated or also forced to submit to Hideyoshi. Ieyasu himself retained his territories and arranged for his son, Hideyasu, to be adopted by Hideyoshi, though only sources favourable to the Tokugawa call it an adoption; Hideyoshi’s partisans describe Hideyasu as a hostage.

    Ieyasu’s son, Hideyasu. Whether he was an adopted son or a hostage depends on who you ask.

    The fact that Ieyasu had been able to force a stalemate against heavy odds is a noteworthy military achievement in itself, but it is made all the more remarkable by the fact that, throughout 1583-85, his territories had been subject to extraordinary rainfalls, which had led to flooding and the consequent devastation to infrastructure and food supplies.

    The Battle of Komaki-Nagakute could not be considered a ‘victory’ for either side, but Hideyoshi was clearly in the ascendancy, and Ieyasu’s resources had been strained to the brink by years of flood, famine, and war. Then, in 1586, the massive Tensho Earthquake struck, causing catastrophic damage across central Japan, striking both sides’ lands equally. Though his superior resources meant that Hideyoshi was probably better positioned to recover, he had bigger plans. Instead of attempting to crush Ieyasu a second time, he tried a different tack.

    The theorised intensity scale of the 1586 Tensho Earthquake.
    As6022014 – 宇佐美龍夫 『最新版 日本被害地震総覧 416‐2001』 , Lincun(2010)ファイル:地図 令制国 和泉国.svg, CC 表示-継承 3.0, https://commons.wikimedia.org/w/index.php?curid=18458686による

    Using Oda Nobuo as an intermediary, Hideyoshi attempted to convince Ieyasu to submit. Initially refusing, Ieyasu was finally convinced by an offer of marriage to Hideyoshi’s younger sister, Lady Asahi. Some sources suggest that Hideyoshi forced his sister to divorce her husband so the marriage could take place, whilst others suggest she was already divorced, or else her husband was dead. Either way, given that Lady Asahi was already in her 40s by the time the marriage took place, it was clearly a match made for political rather than dynastic reasons.

    A marriage like that may seem strange to our modern eyes, but it was generally seen as a politically savvy move, as it bound Ieyasu and Hideyoshi together as family. Shortly after the wedding, Ieyasu travelled to Osaka and formally submitted to Hideyoshi as his vassal and brother-in-law. Later Tokugawa sources suggest that on the night of his arrival in Osaka, Ieyasu was secretly visited by a nervous Hideyoshi, who was still unsure whether he truly meant to submit. The meeting is probably apocryphal, but Ieyasu certainly swore loyalty to Hideyoshi in an elaborate ceremony shortly afterwards.

    Lady Asahi, whose marriage to Ieyasu bound him and her elder brother, Hideyoshi, together. The fact that she was around 44 years old when they married was no obstacle.

    Later in 1586, Ieyasu moved his base to Sunpu, which was more central to his domains and better positioned to monitor peace in the Kanto region on Hideyoshi’s behalf. For the next few years, Ieyasu proved himself a loyal retainer. In 1590, when tensions between the Hojo and Hideyoshi began to rise, he attempted to act as a mediator, since he was father-in-law to Hojo Ujinao.

    Ieyasu’s diplomatic efforts bore some fruit, with the Hojo sending Ujinao’s uncle, Ujinori, to Kyoto to negotiate with Hideyoshi. However, Ujinao himself refused to come, and Hideyoshi was determined to either force the Hojo to submit or be destroyed. Later scholars suggest that Ieyasu’s position with the Hojo might have been deliberately undermined by rumours that he stood to benefit from their defeat, as he had been promised the eight provinces of the Kanto in exchange for the five he currently controlled, in the event of the Hojo being removed.

    The situation just before the Odawara Campaign. Ieyasu stood to gain control of the territory of the Hojo (green) in the event of their defeat, a fact that may have put a damper on previously good Tokugawa-Hojo relations.
    By Alvin Lee – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=39214209

    Ieyasu denied the rumours, and their exact impact on negotiations is controversial, but Tokugawa forces served Hideyoshi in the vanguard of what became known as the Odawara Campaign that saw the Hojo decisively defeated, and Ieyasu received the eight Kanto provinces as the rumours had suggested he would.

    Precisely why Hideyoshi offered these provinces to Ieyasu is still debated. It was certainly true that Ieyasu was in no position to refuse the offer, and taking possession of these new lands effectively doubled his income, at least on paper. On the other hand, the provinces had been Hojo territory for generations, and the local lords would prove difficult to control, not to mention the damage caused by the recent campaign.

    Edo Castle as it appeared in the 19th Century. The site was underdeveloped when Ieyasu arrived in 1590, but it would eventually grow to become the centre of his dynasty’s power.

    Some suggest that Hideyoshi genuinely believed in Ieyasu’s abilities to bring the region under control. Others conclude that his real intention was to separate Ieyasu from his power base in Mikawa. Either way, it would prove a fateful decision, perhaps best exemplified by the fact that Ieyasu’s chosen base, Edo Castle, is the site of the Imperial Palace in modern Tokyo.

    Sources
    https://ja.wikipedia.org/wiki/%E5%BE%B3%E5%B7%9D%E5%AE%B6%E5%BA%B7
    https://ja.wikipedia.org/wiki/%E6%B1%9F%E6%88%B8%E5%9F%8E
    https://ja.wikipedia.org/wiki/%E5%B0%8F%E7%89%A7%E3%83%BB%E9%95%B7%E4%B9%85%E6%89%8B%E3%81%AE%E6%88%A6%E3%81%84
    https://ja.wikipedia.org/wiki/%E7%B9%94%E7%94%B0%E7%A7%80%E4%BF%A1
    https://ja.wikipedia.org/wiki/%E7%B9%94%E7%94%B0%E4%BF%A1%E5%AD%9D
    https://ja.wikipedia.org/wiki/%E7%B9%94%E7%94%B0%E4%BF%A1%E5%BF%A0
    https://ja.wikipedia.org/wiki/%E7%B9%94%E7%94%B0%E4%BF%A1%E9%9B%84
    https://ja.wikipedia.org/wiki/%E8%B3%A4%E3%83%B6%E5%B2%B3%E3%81%AE%E6%88%A6%E3%81%84
    https://ja.wikipedia.org/wiki/%E7%B9%94%E7%94%B0%E4%BF%A1%E9%95%B7
    https://ja.wikipedia.org/wiki/%E5%A4%A9%E6%AD%A3%E5%9C%B0%E9%9C%87
    https://ja.wikipedia.org/wiki/%E8%B3%A4%E3%83%B6%E5%B2%B3%E3%81%AE%E6%88%A6%E3%81%84
    https://ja.wikipedia.org/wiki/%E7%B5%90%E5%9F%8E%E7%A7%80%E5%BA%B7
    https://ja.wikipedia.org/wiki/%E6%9C%9D%E6%97%A5%E5%A7%AB

  • The Second Unifier – Toyotomi Hideyoshi. Part Five.

    The Second Unifier – Toyotomi Hideyoshi. Part Five.

    In 1586, the powerful Tensho Earthquake brought about a temporary halt to Hideyoshi’s campaign to subdue the entire realm. In the aftermath, he had made peace with, then accepted the formal submission of Tokugawa Ieyasu, and now turned his attention to Japan’s southern island, Kyushu.

    Kyushu.

    As we’ve looked at in previous posts, the most powerful clan in Kyushu at this time were the Shimazu, who were on the verge of conquering the entire island, and were putting enormous pressure on their long-term rivals, the Otomo, who reached out to Hideyoshi for help. Hideyoshi responded by issuing a ceasefire order, the sobujirei, though scholars disagree if this was an order issued on a case-by-case basis, or a formal law brought in my Hideyoshi.

    Regardless of the legal basis, the Otomo swiftly agreed, but the Shimazu remained defiant, with the head of the clan, Shimazu Yoshihisa, going as far as suggesting that the Shimazu, a clan with its long and proud lineage, would never submit to a peasant ‘upstart’ like Hideyoshi. Perhaps unsurprisingly, Hideyoshi didn’t take kindly to this and so ordered the invasion of Kyushu, officially in support of the Otomo.

    A statue of Shimazu Yoshihisa. He was the head of a proud clan and believed he had no reason to fear the ‘upstart’ Hideyoshi. He would be proved wrong.
    Ginger1192 – 投稿者自身による著作物, CC 表示-継承 3.0, https://commons.wikimedia.org/w/index.php?curid=24854517による

    At first, Hideyoshi seems to have tried to avoid committing his own troops to the invasion, instead relying on forces provided by the Mori, Chosokabe and their vassals to do the bulk of the fighting. This strategy may have been wise from a manpower preservation point of view, but the Shimazu proved more than capable of living up to their lineage, defeating the initial landings and giving Hideyoshi the proverbial bloody nose in the process.

    Much like the independent clans of Kii Province and the Chosokabe of Shikoku, however, the Shimazu were about to learn that Hideyoshi was a different kind of ruler, able to marshal resources that even the might of Kyushu could not hope to match. Taking the field himself, Hideyoshi is said to have amassed an army of some 300,000, with all the requisite supplies and resources to support such a massive force.

    Ashigaru. Far from the popular image of massed ranks of ferocious samurai, armies in the late Sengoku Period were largely made up of semi-professional troops armed with firearms, spears, and mass-produced swords.

    This was possibly the largest army ever assembled in Japan before the modern era (though sources vary), and the Shimazu were swiftly overwhelmed. It is important to note that, despite the overwhelming advantage in numbers, Hideyoshi’s force was not a single, massive bludgeon. He had proven himself a skilled strategist, able to deploy significant force in key areas, using innovative tactics to wear down defenders and capture strategic castles and other territory, rarely relying on brute force to break enemy forces.

    The Shimazu, much like the Chosokabe before them, fought bravely, but they were outmatched from the start, and eventually, Yoshihisa, who had claimed his clan would never submit to an ‘upstart’, was forced to seek peace. The terms were harsh; the Shimazu were forced to give up almost all of Kyushu, and were confined to Satsuma Province in the southwest of the island (in the western half of modern Kagoshima Prefecture).

    Satsuma Province.
    By Ash_Crow – Own work, based on Image:Provinces of Japan.svg, CC BY 2.5, https://commons.wikimedia.org/w/index.php?curid=1691755

    The rest of Kyushu was divided up amongst Hideyoshi’s supporters, with the Otomo (who the invasion had nominally been in support of) receiving some, but not all of their lands back.

    It is at this point that Hideyoshi turned his attention to a group that have only been briefly mentioned thus far, but who had a significant presence on Kyushu, the Jesuits. We’ll have a detailed look at Portuguese activities in Japan in their own post, but to summarise, after the first arrival of Portuguese merchants in Japan in 1543, they had slowly, but steadily expanded their influence through commerical interests, and the spread of Christianity, ultimately being based at the port of Nagasaki.

    A contemporary depiction of a Portuguese trading ship of a type commonly seen at Nagasaki.

    Outside of Kyushu, the attitude of powerful Daimyo towards these Christians seems to have been fairly ambivalent, with most tolerating their presence, but few converting to the foreign religion. Hideyoshi himself issued permits for Christian priests to preach their religion in Osaka, and, according to some sources, he asked Jesuit Priest Gaspar Coelho to assist him in building an armada to be used in the conquest of China once Japan had been unified.

    This changed after the subjugation of Kyushu. Sources differ on exactly what occurred, with some blaming the machinations of the native Japanese Buddhist clergy, but the short version is that Hideyoshi became aware of the fact that Nagasaki had effectively been handed over to complete Portuguese control. They had fortified it and were apparently using it as a port through which non-Christian Japanese were sold out of the country as slaves.

    A contemporary image of Portuguese at Nagasaki. Though the trade was primarily in silks, spices, and silver, rumours of Japanese slaves being transported out of the country were enough to earn Hideyoshi’s ire.

    The issue of Japanese being sold as slaves by Portuguese merchants remains controversial (surprise, surprise), with debates raging over the extent of the practice and how involved the Japanese themselves were. There are contemporary sources which indicate that Japanese slaves could be found across Asia, and the concept of ‘unfree labour’ was already well established in Japan at this time, ranging from effective serfdom to labourers convicted to a term of service as punishment for a crime.

    Another issue is that one of the primary sources describing Portuguese involvement in slavery also describes them as a people that skin cows and horses alive, and eat the meat raw with their bare hands, suggesting that the purpose of such ‘records’ was more about demonising the Portuguese than recording actual events.

    A contemporary depiction of Portuguese in Japan. Though not all sources paint them in a negative light, the foreign visitors were often looked on as strange and even barbarous by comparison.

    Regardless of how extensive the trade was, it provided a convenient enough excuse for Hideyoshi to act. Though highlighting the fortifications at Nagasaki, and the selling of Japanese as slaves, modern historians more generally agree that the move against the Christians was more about consolidating power, as Hideyoshi believed that Christian theology was a direct threat to the traditional Japanese belief in a divine Emperor, from whom Hideyoshi’s power ultimately derived.

    Another theory is that Hideyoshi wanted to control trade with the West, believing (erroneously) that the trade was controlled by the Jesuits, when in reality, religious and commercial interests were separate, and often in conflict (the Jesuits, for example, actively opposed enslaving Japanese) This theory suggests that Hideyoshi hoped that removing the priests would allow him to take direct control of the trade.

    A contemporary image of a Christian Mass in Japan. Hideyoshi believed that the priests controlled the merchants.

    Whether he was motivated by political, religious, or economic reasons (or all three), Hideyoshi issued what became known as the Bateren expulsion order (bateren being the Japanese word for Christian priests, derived from the Latin Patren) in 1587. What followed was a brief campaign of repression against Christianity; the Jesuit base in Kyoto was burned, and territory around Nagasaki was seized.

    Ultimately, however, Hideyoshi seems to have largely ignored his own order, keeping several Christian priests as interpreters and scribes, and allowing trade to continue practically unmolested. For now, at least, Hideyoshi had bigger problems than Christian priests.

    Hojo Ujinao

    Sources
    https://ja.wikipedia.org/wiki/%E8%B1%8A%E8%87%A3%E7%A7%80%E5%90%89
    https://ja.wikipedia.org/wiki/%E4%B9%9D%E5%B7%9E%E5%B9%B3%E5%AE%9A
    https://ja.wikipedia.org/wiki/%E3%83%90%E3%83%86%E3%83%AC%E3%83%B3%E8%BF%BD%E6%94%BE%E4%BB%A4
    https://ja.wikipedia.org/wiki/%E4%B9%9D%E5%B7%9E%E5%9B%BD%E5%88%86
    https://ja.wikipedia.org/wiki/%E6%83%A3%E7%84%A1%E4%BA%8B%E4%BB%A4
    https://en.wikipedia.org/wiki/Slavery_in_Japan