Miyoshi Masayasu
Miyoshi Masayasu (Japanese: 三好政康, 1528 – 3 June 1615) was one of the Miyoshi Sannin-shū. He is also known by the Buddhist name Miyoshi Nyūdō Seikai (三好入道清海).
Born~Died 1528 ~ May 28, 1569Last edited Oct 15, 2026, 2:51 PM
Details
- Born ~ Died
- 1528 ~ May 28, 1569
- Born
- 1528
- Died
- 3 June 1615
- Gender
- Male
Miyoshi Masayasu (Japanese: 三好政康, 1528 (first year of Kyoroku) – 3 June 1615 (20th year of Keichō, 7th day of the 5th month of the lunar calendar)) was one of the Miyoshi Sannin-shū. He is also known by the Buddhist name Miyoshi Nyūdō Seikai (三好入道清海).
Life
He was born as the son of Miyoshi Masanaga (三好政長, ja) and was also the elder brother of Miyoshi Masakatsu.1
In 1549, at the age of 21, his father Masanaga was defeated by the head of the family, Nagayoshi, in the Battle of Eguchi (江口の戦い, ja) and killed in action.
Afterwards, Masayasu fought against Nagayoshi as a retainer of Hosokawa Harumoto, but later accepted Nagayoshi's advice and made peace; he took part in the 1555 invasion of Tanba and the 1562 capture of Hatakeyama Takamasa (畠山高政, ja) and, as a capable front-line commander, contributed to the expansion of Nagayoshi's power.
After Nagayoshi's death, he joined with Matsunaga Hisahide and the remaining Miyoshi Sannin-shū to launch the Eiroku Incident, killing Ashikaga Yoshiteru, the 13th shōgun of the Muromachi shogunate, who had been in conflict with the Miyoshi clan, and Ashikaga Yoshihide, Yoshiteru's younger cousin, was installed as the 14th shōgun.
🤖 This page was machine-translated by AI from 한국어 “미요시 마사야스”. Please fix any mistakes.
This page is based on “미요시 마사야스” from 한국어 위키백과, (r38467233) CC BY-SA 4.0 used under the license. The original authors are listed in its page history.
Last edited Oct 15, 2026, 2:51 PM · r82393 · Text is available under CC BY-SA 4.0.