1580: The End of the Ishiyama War and the Fall of Miki Castle
In January, after nearly two years of siege, Hashiba Hideyoshi forced the surrender of Bessho Nagaharu's Miki Castle, advancing his pacification of Harima. In April, Hongan-ji's leader Kennyo accepted a peace brokered by the imperial court and withdrew, and by August his son Kyōnyo, who had continued resistance, also surrendered the fortress, finally ending the decade-long Ishiyama War. In Echigo, the Otate no Ran also concluded with Uesugi Kagekatsu's victory, making this a year in which several long-running conflicts across the country reached their resolution.
Events this year
2/2
After a siege lasting about twenty-two months, Bessho Nagaharu and his family took their own lives in exchange for sparing the garrison and townspeople, and Miki Castle surrendered to Hashiba Hideyoshi.
See this battle in detail →Sources 三木市「三木合戦とは【豊臣兄弟と三木】」／三木市「三木城跡及び付城跡・土塁（国指定史跡）」／三木市「三木合戦の史跡・スポット」
Month 8
Ujimasa transferred headship to Ujinao with the Oda marriage arrangement as a condition. Ujimasa continued as regent under the title 'Goyashiro-sama' and exercised authority through the 'yū-kō' seal.
Honganji leader Kennyo accepted an imperial-mediated peace and withdrew from Ishiyama Honganji, ending roughly ten years of war between the Honganji and Oda Nobunaga.
See this event in detail →Sources 大阪市「石山（大坂）本願寺推定地」／大阪市「特別史跡大坂城跡の特徴（大坂本願寺と寺内町）」
As the conquest of Tajima advanced, Hashiba Hidenaga entered Arikoyama Castle at Izushi and established a base for governing the province, entrusting Takeda Castle to his retainer Kuwayama Shigeharu.
After pacifying Harima, Hashiba Hideyoshi received Himeji Castle from Kuroda Yoshitaka, rebuilt it, and made it the base for campaigns into Tajima, Inaba, and Bitchū.
See this event in detail →Sources 兵庫県立歴史博物館「姫路城 年表」／姫路市「姫路城の歴史」／姫路市立城郭研究室「姫路城への道しるべ 第2章 姫路城の歴史」
After Nobunaga's peace settlement with Ishiyama Hongan-ji, Sakuma Morimasa, serving under Shibata Katsuie, captured Oyama Gobo, the headquarters of the Kaga Ikkō-ikki.
See this battle in detail →Sources 石川県「金沢城の歴史」