Aomatsuba Incident

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Aomatsuba Incident monument

The Aomatsuba Incident (青松葉事件) took place in 1868 in Nagoya Castle.


The Aomatsuba incident was an oppression of the sabaku ha (the sabaku party) that occurred in the Owari domain from January 20 to 25, 1868. Immediately after returning to Japan on the 20th of the same day, Yoshikatsu Tokugawa, the 14th Lord of the domain, who had been doing political treatment after Taisei Hokan in Kyoto, received an imperial order of 'rape goofy'姦徒誅鋤, and an oppression order was issued. The subjects were from senior vassals to general feudal retainers, with 14 decapitation and 20 punishments. There are various theories about the background of the imperial decree.


1 progress until the incident

2 incident

2.1 punishers by case

2.2 origin of the incident

2.3 various causes

3 Effect

4 research on cases

5 footnotes

6 bibliography

7 bibliography

8 related literature

The process of the outbreak

The Owari Tokugawa family, the Kishu Tokugawa family, and the Mito Tokugawa family, which were Gosanke (the three privileged branches of the Tokugawa family), were called Otsukegaro【御付家老】. Otsukegaro was simply the Ometsuke【大目付】 of the Lord of the domain dispatched from the Shogun family, and in Owari, the family of Hayato Naruse and the takenokoshi Hyobu shoyu family were well known for their chigyo. The power was strong from the family that the LORD had to pay attention to, and the domain was naturally divided into the Naruse faction and the takekoshi faction. Among them, it was the takenokoshi group who continued to take closer positions to the Bakufu (Japanese feudal government headed by a Shogun), and in the old days, Muneharu Tokugawa, the seventh Lord, who was rebellious to the Bakufu, was forced to retire. At the end of the Edo period, the domain was divided into 'Kintetsu Gumi,' which advocated the Sonno joi (reverence for the emperor and the expulsion of foreigners), and 'Fuigo party,' which was a careless position, and the Naruse family was close to the Fuigo party.


In the first place, the Owari Tokugawa family was the family style of the retired emperor's family from the time of the domain of Yoshinao Tokugawa, and since there was a rebel against the Tokugawa Shogunate family once again, Yoshikatsu Tokugawa, who became the 14th Lord of the domain, also took the position of Sonno joi (the descent of the emperor and expelling the barbarians), and especially the Takekoshi family in advance of the reform of the domain administration since the arrival of Perry. They often opposed the Fuigo party. When Yoshikatsu retired due to the suppression of Tairo (Chief Minister) Naosuke Ii, the Kintetsu Gumi fell down, and Takekoshi Hyobu shoyu took over the domain administration under the new Lord Mochinaga, and after the Sakuradamon incident, takekoshi Hyobu shoyu fell out, and Yoshikatsu went to the front of the domain government while retiring, and went to the capital frequently with the Kintetsu Gumi to enter the government. Meanwhile, Mochinaga retired and Yoshikatsu's son, Yoshinobu, became the Lord of the domain, and Fuigo party be shelved.

After Taisei Hokan, the Bakufu army was defeated in the battle of Toba Fushimi on January 3 and 5, 1868. When the news arrived in Nagoya, the conflict between the Kintetsu Gumi who insisted on the dispatch of troops and the Fuigo party, which was cautious about the dispatch of troops, deepened the conflict. At that time Yoshikatsu, who was in Kyoto, heard the situation from Tomoyuki Yoshida in Owari domain who was an inspector,who came to Kyoto on the way to Kyoto in as the form of Messaging Masakazu Mamiya who was casstle owner.

The government army, who won the battle of Toba Fushimi, appointed imperial Prince Ninna Ji no Miya (komatsunomiya Akihito) to Seii taishogun (literally, "great general who subdues the barbarians") on January 7, and issued an order to hunt down and kill Yoshinobu, but in the east of Nagoya there were many Bakufu Fudai daimyo (Japanese feudal government headed by a Shogun), and Yoshinobu's counterattack was also considered, so he had been felt uneasy about passing the conquest Army It was. On April 15, the imperial court summoned Yoshikatsu and ordered the return of the imperial court to purge the supporters of the sabaku party in the Owari domain , which was the key point of transportation, to persuade neighboring in owari domain feudal lords to come to the imperial court.


Yoshikatsu was a member of the imperial family from early time, but it was in a position to consider the Bakufu as the head of the Tokugawa gosanke (the three privileged branches of the Tokugawa family), and it was natural that there were sabaku party in the domain. However, it was not possible to rebel against imperial order, and in the end of distress, he decided to suppress the sabaku party (supporters of the shogunate), and to shungaku matsudaira, {Tencho is a good vassal. Bakufu (the Japanese feudal government led by the shogunate) was his father and son. In the time of national calamity, if the father and the son's father are captured, they shall stand up for the righteousness of their servants..} " He said.

Yoshikatsu left Kyoto on the order of imperial command, and stayed at Owari ichinomiya on January 19, and went to Nagoya castle on the 20th of the same month. On the same day, chief retainer shinzaemon Aritsuna Watanabe was arrested and beheaded when he welcomed Yoshikatsu in Nagoya Jo castle. In addition, 13 persons including ooban gashira, Sakakibara kageyu, oobangashira, Kuranosuke Ishikawa were arrested, and they were disappointed and beheaded. There were no explanation of the reason at the time of killing, and 14 families took up residence and food.

Yoshikatsu left the incident as an internal conflict in the Owari domain, and tried to forbid speaking feudal retainer of the domain. Also, for the reason of 'invite the relatives of emperor to the emperor,' he confirmed to the various domains of the country (whether the imperial court side or betray the imperial court) in six provinces in the Tomi, Kai, Suruga, Shinano,Mino, Shimotsuke provinces on the 29th of March.

Three chief retainers of the Owari branch of the ruling Tokugawa clan were executed in the Ninomaru Palace of Nagoya Castle. Early in the Shōwa era, around 1926, a monument was erected at the execution site. The exact site is unknown although it is thought to have taken place approximately 100 metres south of the current site of the monument. The stone stelae was re-erected after the original one disappeared.