Horio Yoshiharu, also known as Horio Mosuke, was born in Niwa-gun, Owari (Aichi Prefecture) in 1542. Due to his serene composure and the ability to maintain tranquility even in the most intense situations, he earned the nickname "Hotoke no Mosuke," or "The Buddha Mosuke," after the enlightened deity, Hotoke.
Yoshiharu's father once served as a vassal in the Iwakura Oda clan, rivals of Oda Nobunaga. However, after Nobunaga defeated their clan, Yoshiharu's father became a Ronin, a samurai without a master. The Sengoku period was an era of constant life-or-death struggles for samurai. Remaining composed under pressure and concealing one's thoughts and emotions were crucial skills to avoid betrayal. It was during these early days that Yoshiharu likely honed his Buddha-like calmness and mental fortitude for survival. Fortunately, he would later find employment under Nobunaga, albeit in a modest role as a foot soldier.
The pivotal moment that brought Yoshiharu to Nobunaga's attention happened during a hunting excursion in Owari. A massive wild boar charged the hunting party, causing everyone to scatter—everyone except Yoshiharu. Unarmed, he stood his ground and wrestled with the beast. Nobunaga was greatly impressed by Yoshiharu's calmness, strength, and courage, which led to his promotion. Yoshiharu's blend of bravery and serenity served him well in subsequent battles, earning him widespread admiration.
As the nation was on the brink of the Battle of Sekigahara in the late summer of 1600, and alliances were fracturing into Eastern and Western factions, Yoshiharu attended a drinking gathering in Chiryu, Mikawa Province, with Lord Mizuno Tadashige of Kariya Castle and Kaganoi Shigemochi. The discussion about war and allegiance escalated, culminating in a drunken and enraged Kaganoi killing Lord Mizuno and injuring Yoshiharu. Despite his wounds, Yoshiharu calmly and effectively took control of the situation, demonstrating a Buddha-like composure. He administered justice by confronting Kaganoi and restoring peace. It is said that Yoshiharu sustained seventeen wounds from Kaganoi's spear during the skirmish, rendering him unable to participate in the Battle of Sekigahara. Instead, his son took his place on the battlefield.
Following Sekigahara, the Horio clan was granted land in Izumo Province (Shimane Prefecture) and assumed control of Matsue Castle as Daimyo. Yoshiharu entered retirement at this post. Although his son Tadauji succeeded him, he succumbed to illness in 1604. Tadauji's heir, a nine-year-old named Tadaharu, was considered too young to assume the role, prompting Yoshiharu to once again take on the responsibilities until his grandson was ready to lead.
Horio Yoshiharu embodied both courage and skill in combat, all while exuding the calm and enlightened spirit of a Buddha—an invaluable trait for samurai navigating the razor's edge of the Sengoku period.
See also
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Saito Tatsuoki
Saito Tatsuoki (6 September 1548 - 1573) was a daimyo of Mino Province during Japan's Sengoku period and the third-generation lord of the Saito clan. He was the son of Saito Yoshitatsu and grandson of Saito Dosan. His mother was a daughter of Azai Hisamasa, making him a nephew of Azai Nagamasa and a relative of Oda Nobunaga's first wife, Nohime, who was also a daughter of Saito Dosan.
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Kyogoku Tadataka
Kyogoku Tadataka (1593–1637) was a Japanese nobleman and the head of the Kyogoku clan during the early 17th century, a pivotal time marked by the Tokugawa consolidation of power. His childhood name was Kumamaro, and he hailed from a lineage claiming descent from Emperor Uda (868–897). Tadataka was the son of Kyogoku Takatsugu and one of his concubines, with his paternal grandfather being Kyogoku Takayoshi.
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Matsudaira Naomasa
The late Muromachi period, also known as the Sengoku period, was an era of continuous conflict and upheaval, often likened to periods of chaos in Chinese history. This turbulent era was brought to an end by Tokugawa Ieyasu, who, with the support of loyal retainers, established the Edo Shogunate and became the ruler of Japan. Among Ieyasu’s descendants, Naomasa Matsudaira, his grandson, played a significant role during the Osaka Siege. He earned praise from his adversary, Nobushige Sanada (Yukimura Sanada), for his valor as a young warrior and maintained strong relations with successive Tokugawa shoguns.
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Ishikawa Kazumasa
Ishikawa Kazumasa (1534–1609) was a prominent Japanese retainer who began serving Tokugawa Ieyasu during his youth. Their relationship began in 1551 when both were hostages under the Imagawa clan. Kazumasa remained a loyal companion to Ieyasu, participating in key events such as the Siege of Terabe in 1558 and the Siege of Marune in 1560. After Ieyasu broke away from the Imagawa following the latter event, Kazumasa became a trusted retainer and administrator in his service.
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Shimazu Toyohisa
Shimazu Toyohisa (July 1570 – October 21, 1600), also known as Shimazu Tadatoyo, was a samurai of the Shimazu clan and the son of Shimazu Iehisa. He was the nephew of Shimazu Yoshihiro and held command over Sadowara Castle. Known for his valor, Toyohisa participated in numerous key battles of the late Sengoku period, earning recognition for his bravery and tactical acumen.
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Ikeda Terumasa
Ikeda Terumasa (January 31, 1565 – March 16, 1613) was a Japanese daimyo of the early Edo period, recognized by his court title, "Musashi no Kami," and known as the "Shogun of Western Japan." Terumasa, a distinguished military leader, participated in numerous significant battles during the late Azuchi-Momoyama period. His service at the Battle of Sekigahara earned him control over the Himeji domain. Originally named Araokojimaru, he was the son of Ikeda Tsuneoki and the brother of Ikeda Sen. He later became the heir to Ikeda Nobuteru and held Ikejiri Castle in Mino Province.
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Mori Tadamasa
Mori Tadamasa (1570 - July 31, 1634) was a notable military commander during Japan’s Warring States period and an early Edo-period daimyo. Initially, he governed Kawanakajima Domain in Shinano Province (modern-day Nagano Prefecture) and later became the first lord of Tsuyama Domain in Mimasaka Province (now northern Okayama Prefecture). He founded the Mori family line of the Ako Domain. Tadamasa’s family origins trace back to the Genji (Minamoto) clan, specifically the Kawachi-Genji branch from Kawachi Province (in present-day southeastern Osaka Prefecture), a lineage tied to Emperor Seiwa through his ancestor Yorisada Mori, a great-grandson of the famed Minamoto no Yoshiie.
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Sanada Masayuki
Sanada Masayuki (1547 – July 13, 1611) was a daimyo and prominent lord of Japan's Sengoku period. Head of the Sanada clan from Shinano Province, he served the powerful Takeda clan of Kai Province alongside his father and brothers during Takeda Shingen’s leadership. Following the Takeda clan's decline, Masayuki took charge of the Sanada, and despite limited resources, he established his clan as an independent power under the Toyotomi regime by navigating alliances with dominant clans such as the Tokugawa, Hojo, and Uesugi. Renowned as one of his era's greatest strategists, Masayuki achieved notable victories against the Tokugawa forces in the Battle of Kami River and the Siege of Ueda.
