Wakisaka Yasuharu held the position of daimyo over Awaji Island before ruling over Ozu in Iyo Province. His significance in the Battle of Sekigahara in 1600 cannot be overstated.
Initially, Wakisaka served under Akechi Mitsuhide as part of Oda Nobunaga's forces. During the siege of Hijiyama in 1581, he led Nobunaga's troops. However, after Mitsuhide's betrayal and Nobunaga's demise in 1582, Wakisaka became a retainer of Toyotomi Hideyoshi.
Distinguished as one of the "Seven Spears of Shizugatake" after the battle in 1583, Wakisaka earned a place among Hideyoshi's most trusted generals. With expertise in naval tactics, he was granted control over Awaji Island and later became a commander in Hideyoshi's navy. Wakisaka played a crucial role in Hideyoshi's military campaigns, including the Kyushu Campaign (1587), the Siege of Odawara (1590), and the Korean invasions (1592–1598), leading 1,500 warriors. However, the Korean expeditions proved challenging, as Wakisaka's fleet suffered defeats at the hands of the Korean hero, Admiral Yi Sun-Sin.
During the Battle of Sekigahara, Wakisaka initially intended to support the Tokugawa forces. However, he felt compelled to join Ishida Mitsunari's side as Mitsunari had raised Wakisaka's troops during a stay in Osaka. Positioned below the Kobayakawa forces on Mt. Matsuo, Wakisaka and his samurai ultimately sided with the Eastern forces at the crucial moment, contributing to their victory. His direct attack on the Otani garrison played a significant role in securing victory for the Tokugawa side.
In recognition of his contributions, Wakisaka was granted his lands at Awaji and later received a domain at Ozu in Iyo Province. He passed away on September 26, 1626, at the age of 72.
See also
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Okubo Tadanori
Okubo Tadanori (January 13, 1842 – August 10, 1897) was the 9th daimyo of Odawara Domain in Sagami Province (modern-day Kanagawa Prefecture) during the late Edo period. Before the Meiji Restoration, he held the courtesy title of Kaga no Kami.
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Okubo Tadayo
Okubo Tadayo (1532 – October 28, 1594) was a samurai general who served Tokugawa Ieyasu during the Azuchi–Momoyama period and later became the daimyo of Odawara Domain in the early Edo period.
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Araki Murashige
Araki Murashige (1535 – June 20, 1586) was a samurai and retainer of Ikeda Katsumasa, the head of the powerful Settsu-Ikeda clan in Settsu Province. Initially serving under Katsumasa, he aligned himself with Oda Nobunaga after Nobunaga’s successful campaign to establish control over Kyoto.
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Yuki Hideyasu
Yuki Hideyasu (March 1, 1574 – June 2, 1607) was a Japanese samurai who lived during the Azuchi–Momoyama and early Edo periods, serving as the daimyō of Fukui Domain in Echizen Province. Born Tokugawa Ogimaru, he was the second son of Tokugawa Ieyasu and Lady Oman (also known as Lady Kogō), a handmaiden to Ieyasu’s wife, Lady Tsukiyama. Due to Ieyasu’s fears of his wife’s reaction to Oman’s pregnancy, Ogimaru and his twin brother were born in secrecy at the home of Honda Shigetsugu, one of Ieyasu’s retainers. Oman’s other son eventually became a priest, while Ogimaru was raised apart from Ieyasu, whom he only met at the age of three, in a meeting arranged by his older half-brother, Matsudaira Nobuyasu.
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Tsutsui Sadatsugu
Tsutsui Sadatsugu (June 6, 1562 – April 2, 1615) was a prominent figure in the Sengoku and early Edo periods, known as the cousin and adopted heir of Tsutsui Junkei, the feudal lord of Yamato Province. Following Junkei's death in 1584, Toyotomi Hideyoshi relocated Sadatsugu to Iga Province, where he oversaw the construction of Iga Ueno Castle, marking the height of his prominence.
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Matsudaira Kiyoyasu
Matsudaira Kiyoyasu (September 28, 1511 – November 29, 1535) served as the 7th lord of the Matsudaira clan during Japan's tumultuous Sengoku period. Renowned as the paternal grandfather of Tokugawa Ieyasu, one of Japan's "great unifiers," Kiyoyasu expanded his clan’s influence, bringing all of northern Mikawa Province under his control after subduing the Saigo clan. His power was further symbolized by the construction of Okazaki Castle, a testament to the Matsudaira’s growing dominance.
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Matsudaira Hirotada
Matsudaira Hirotada (June 9, 1526 – April 3, 1549) was a daimyo and lord of Okazaki Castle in Mikawa Province during Japan’s turbulent Sengoku Period. He is best known as the father of Tokugawa Ieyasu, the founder of the Tokugawa shogunate.
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Ikeda Tsuneoki
Ikeda Tsuneoki (1536 – May 18, 1584), also known as Ikeda Nobuteru, was a prominent daimyo of the Ikeda clan and a distinguished military commander during Japan's Sengoku and Azuchi-Momoyama periods. He served under the influential warlords Oda Nobunaga and Toyotomi Hideyoshi. Tsuneoki’s connection to Nobunaga began early, as his mother, Yotokuin, was Nobunaga’s wet nurse and later became a concubine to Oda Nobuhide, Nobunaga's father.