, formerly known as was a half-brother of Toyotomi Hideyoshi

Toyotomi Hideyoshi

was a daimyo warrior, general and politician of the Sengoku period. He unified the political factions of Japan. He succeeded his former liege lord, Oda Nobunaga, and brought an end to the Sengoku period. The period of his rule is often called the Momoyama period, named after Hideyoshi's castle...

, one of the most powerful (and significant) warlords of Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

's Sengoku period

Sengoku period

The or Warring States period in Japanese history was a time of social upheaval, political intrigue, and nearly constant military conflict that lasted roughly from the middle of the 15th century to the beginning of the 17th century. The name "Sengoku" was adopted by Japanese historians in reference...

. He was also known by his court title, . After participating in and helping Hideyoshi win the battle at Kii

Kii Province

, or , was a province of Japan in the part of Honshū that is today Wakayama Prefecture, as well as the southern part of Mie Prefecture. Kii bordered Ise, Izumi, Kawachi, Shima, and Yamato Provinces. The Kii Peninsula takes its name from this province....

, Hidenaga oversaw the construction of Wakayama Castle

Wakayama Castle

' in Wakayama, Wakayama Prefecture, Japan, sits at the mouth of the Kii River. Originally Ōta castle, home of the Saiga Ikki, it was captured by Toyotomi Hideyoshi in 1585, during the Siege of Negoroji; many monks from Negoroji sought refuge in Ōta, which was soon destroyed by flood...

 in 1585, appointing Tōdō Takatora

Todo Takatora

was a Japanese daimyo of the Azuchi-Momoyama period through Edo period. He rose from relatively humble origins as an ashigaru to become a daimyo...

 to the chief engineer. He led Hideyoshi's vanguard force a few years later into Satsuma Province

Satsuma Province

was an old province of Japan that is now the western half of Kagoshima Prefecture on the island of Kyūshū. Its abbreviation is Sasshū .During the Sengoku Period, Satsuma was a fief of the Shimazu daimyo, who ruled much of southern Kyūshū from their castle at Kagoshima city.In 1871, with the...

, contributing heavily to his half-brother's victories in gaining control of Kyūshū

Kyushu

is the third largest island of Japan and most southwesterly of its four main islands. Its alternate ancient names include , , and . The historical regional name is referred to Kyushu and its surrounding islands....

. Hidenaga was rewarded the provinces of Kii, Izumi

Izumi Province

was a province of Japan. It is also referred to as . It lay in Kinai, and its area today composes the south-western part of Osaka Prefecture . The Ōshōji in Sakai was the border with Settsu Province, until the beginning of the Meiji period, when the boundary was changed to be at the Yamato River...

 and Yamato

Yamato Province

was a province of Japan, located in Kinai, corresponding to present-day Nara Prefecture in Honshū. It was also called . At first, the name was written with one different character , and for about ten years after 737, this was revised to use more desirable characters . The final revision was made in...

, reaching a governance of one million 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...

.
He was regarded as Hideyoshi's brain and right-arm. He died in Yamato Kōriyama

Yamatokoriyama, Nara

is a city located in Nara, Japan.As of August 31, 2006, the city has an estimated population of 93,280 and the density of 2,185.56 persons per km². The total area is 42.68 km².-Geography:...

, Nara

Nara Prefecture

is a prefecture in the Kansai region on Honshū Island, Japan. The capital is the city of Nara.-History:The present-day Nara Prefecture was created in 1887, making it independent of Osaka Prefecture....

, and his grave there is at .