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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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.
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Sanada Nobuyuki
Sanada Nobuyuki was a renowned samurai of the Sengoku period and the eldest son of daimyō Sanada Masayuki. He was the elder brother of the famous warrior Sanada Yukimura. Nobuyuki’s mother was Kansho-in, Masayuki's wife, and he was married to Komatsuhime (Inahime), the daughter of Honda Tadakatsu and the adopted daughter of Tokugawa Ieyasu. Nobuyuki also had two other wives: Seiin-in, his cousin, and Ukyo, the daughter of Tamagawa Hidemasa.
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Date Hidemune
Date Hidemune was a Japanese daimyō during the early Edo period, born in 1591 as the eldest son of Date Masamune, one of Japan’s most prominent feudal lords. His mother was Shinzo no Kata, a concubine, which affected his future prospects. As a young man, Hidemune lived under the care of Toyotomi Hideyoshi and was given the adult name "Hidemune," adopting one character from Hideyoshi's own name. Hideyoshi granted Hidemune the court rank of junior 5th, lower grade, along with the title of ji-jū, and appointed him as a page to his son, Toyotomi Hideyori.
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Tsutsui Junkei
Tsutsui Junkei (March 31, 1549 – September 15, 1584), the son of Tsutsui Junsho, was a daimyo who ruled over Yamato Province. In 1571, through the mediation of Akechi Mitsuhide, Junkei pledged his service to Oda Nobunaga.
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Oda Nobutada
Oda Nobutada (1557 – June 21, 1582) was a samurai and the eldest son of Oda Nobunaga, known for his active role in several battles during Japan's Sengoku period. He led armies under his father's command in campaigns against Matsunaga Hisahide and the Takeda clan.
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Imagawa Ujizane
Imagawa Ujizane (1538 – January 27, 1615) was a Japanese daimyō who lived through the Sengoku and early Edo periods. He became the tenth head of the Imagawa clan, following in the footsteps of his father, Imagawa Yoshimoto. Ujizane was the father of Imagawa Norimochi and Shinagawa Takahisa.
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Hojo Ujiyasu
Hojo Ujiyasu (1515 – October 21, 1571), the third head of the Odawara Hojo clan, was a formidable daimyo known as the "Lion of Sagami." Revered as a fearsome samurai and brilliant strategist, he became famous for successfully breaking sieges by renowned warlords Takeda Shingen and Uesugi Kenshin. Ujiyasu was the son of Hojo Ujitsuna, and his only known wife was Zuikei-in, sister of Imagawa Yoshimoto. Among his children were Hojo Ujimasa and Uesugi Kagetora.