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| Oyamada Nobushige | |
|---|---|
| Name | Oyamada Nobushige |
| Native name | 小山田 信茂 |
| Birth date | c. 1530s |
| Death date | 1582 |
| Birth place | Kai Province |
| Death place | Kyoto |
| Allegiance | Takeda clan |
| Rank | General, Daimyō |
| Battles | Siege of Takatenjin, Battle of Nagashino, Invasion of Suruga |
Oyamada Nobushige was a Sengoku period samurai and retainer of the Takeda clan who served as a senior general under Takeda Shingen and Takeda Katsuyori. He is best known for his command roles in engagements such as the Siege of Takatenjin and for his controversial conduct during the aftermath of the Battle of Tenmokuzan and the fall of the Takeda domain, which culminated in his capture and execution following the Incident at Honnō-ji and the consolidation of power by Oda Nobunaga's successors. His life intersected with many major figures and events of the late Sengoku period, including Tokugawa Ieyasu, Uesugi Kenshin, Imagawa Yoshimoto, Hōjō Ujiyasu, and the campaigns around Kai Province and Suruga Province.
Born in Kai Province into the Oyamada clan, Nobushige belonged to a lineage of vassals tied to the Takeda clan and the regional politics of the Chūbu region. His family connections brought him into contact with prominent houses such as the Takeda, Imagawa, and Hojo through marriage alliances and hostage exchanges typical of Sengoku period power structures. During his youth he witnessed campaigns led by Takeda Shingen and rivalries with figures including Uesugi Kenshin and Oda Nobunaga, shaping his loyalties and career trajectory amid the shifting balance between Kai Province, Suruga Province, and neighboring domains.
Nobushige rose through the ranks under Takeda Shingen as the Takeda military organization professionalized, participating in operations against the Imagawa clan, the Hōjō clan, and during the famed clash with Uesugi Kenshin in the Kawanakajima campaigns. He served alongside Takeda generals such as Yamagata Masakage, Kobayakawa Takakage, and Naito Masatoyo, and later under Takeda Katsuyori during the Takeda resurgence and decline. His service record includes involvement in sieges, field battles, and defensive actions around strategic fortresses in Kai Province and Suruga Province, intersecting with campaigns influenced by commanders like Hashiba Hideyoshi (later Toyotomi Hideyoshi), Akechi Mitsuhide, and Mōri Motonari through shifting alliances and wartime diplomacy.
As a senior Takeda commander, Nobushige held responsibilities in operations such as the Siege of Takatenjin where the Takeda sought strongholds to secure routes between Kai Province and Tōkai region. His conduct during sieges and garrison duties brought him into contact with rival retainers and castle lords like Okabe Motonobu and opponents aligned with Tokugawa Ieyasu and Oda Nobunaga. After the decisive Takeda defeats at engagements including the Battle of Nagashino and the campaign culminating in Tenmokuzan, Nobushige was involved in attempts to preserve Takeda holdings, coordinate retreats, and negotiate with regional powers such as Tokugawa Ieyasu and surviving Takeda allies including Anayama Nobukimi. These efforts occurred amid the broader collapse of Takeda influence and the territorial ambitions of Oda Nobunaga and Tokugawa Ieyasu in central Japan.
Following the fall of the Takeda strongholds and the death of Takeda Katsuyori at Tenmokuzan, Nobushige surrendered or was captured in the chaotic realignment as Tokugawa Ieyasu and forces loyal to Oda Nobunaga consolidated control over former Takeda territories. He was taken to Kyoto and executed amid the purge of Takeda leadership, an outcome tied to the political settlements and retributions pursued by figures such as Tokugawa Ieyasu, Oda Nobunaga, and their retainers, and occurring shortly after the turmoil of the Incident at Honnō-ji. His death served as a cautionary example referenced by contemporaries and later chroniclers like Shinchō Kōki and regional genealogies tracking the fates of Takeda retainers such as Kōsaka Masanobu and Baba Nobuharu.
In subsequent centuries Nobushige has appeared in works of Edo period historiography, regional chronicles of Kai Province, and modern popularizations of Sengoku history, featuring in narratives alongside figures like Takeda Shingen, Uesugi Kenshin, Oda Nobunaga, Tokugawa Ieyasu, and Toyotomi Hideyoshi. He is portrayed variably in kabuki-inspired theater, historical novels, and television dramas that reconstruct episodes such as sieges and the decline of the Takeda clan, with interpretations influenced by sources including the Kōyō Gunkan and later academic studies in Japanese history and military culture. Modern historians debate his decisions during the Takeda collapse, situating his actions within analyses that include the strategic impact of the Battle of Nagashino, the rise of Oda Nobunaga's forces, and the political aftermath marked by the consolidation under Tokugawa Ieyasu and the Azuchi–Momoyama period.
Category:Samurai Category:Takeda retainers Category:People of Sengoku-period Japan