Horio Tadauji
was a tozama daimyō

Daimyo

is a generic term referring to the powerful territorial lords in pre-modern Japan who ruled most of the country from their vast, hereditary land holdings...

in the Azuchi-Momoyama period

Azuchi-Momoyama period

The came at the end of the Warring States Period in Japan, when the political unification that preceded the establishment of the Tokugawa shogunate took place. It spans the years from approximately 1573 to 1603, during which time Oda Nobunaga and his successor, Toyotomi Hideyoshi, imposed order...

 and Edo period

Edo period

The , or , is a division of Japanese history which was ruled by the shoguns of the Tokugawa family, running from 1603 to 1868. The political entity of this period was the Tokugawa shogunate....

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His father was Horio Yoshiharu

Horio Yoshiharu

Horio Yoshiharu was a daimyo in Azuchi-Momoyama period and Edo period.He was appointed to one of three chu-rō by Toyotomi Hideyoshi and the first leader of the Matsue clan.He was also known as Horio Mosuke ....

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In 1600 at the Battle of Sekigahara

Battle of Sekigahara

The , popularly known as the , was a decisive battle on October 21, 1600 which cleared the path to the Shogunate for Tokugawa Ieyasu...

, acting as a substitute for Yoshiharu who had been injured in the runup to the battle, Tadauji took part in Tokugawa Ieyasu

Tokugawa Ieyasu

 was the founder and first shogun of the Tokugawa shogunate of Japan , which ruled from the Battle of Sekigahara  in 1600 until the Meiji Restoration in 1868. Ieyasu seized power in 1600, received appointment as shogun in 1603, abdicated from office in 1605, but...

's force.
After the battle, Ieyasu praise Tadauji for his credit and add his domain to 240,000 koku

Koku

The is a Japanese unit of volume, equal to ten cubic shaku. In this definition, 3.5937 koku equal one cubic metre, i.e. 1 koku is approximately 278.3 litres. The koku was originally defined as a quantity of rice, historically defined as enough rice to feed one person for one year...

 at Izumo Province

Izumo Province

was an old province of Japan which today consists of the eastern part of Shimane Prefecture. It was sometimes called . The province is in the Chūgoku Region.- History :It was one of the regions of ancient Japan where major political powers arose...

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In 1604, Tadauji died from a disease before Yoshiharu.