was a Japanese daimyo

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...

 of the early 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....

, who ruled the Morioka Domain

Morioka Domain

The was a han or feudal domain that encompasses present-day the middle-northern part of Iwate Prefecture and eastern part of Aomori Prefecture. It is sometimes colloquially called . The domain was tozama daimyo and was governed by the Satake clan. Its income was 100,000...

.

Biography

Toshinao was born at Tago Castle, in Sannohe

Sannohe, Aomori

is a town located in the Sannohe District of southeastern Aomori Prefecture in the Tōhoku region of Japan. As of 2009, the town had an estimated population of 11,426 and a density of 75.4 persons per km². Its total area was 151.55.91 km².-Geography:...

, the eldest son of Nanbu Nobunao

Nanbu Nobunao

' was a Japanese daimyo of the Sengoku period. He succeeded his father as head of the Nanbu clan and was a prominent figure in the local warfare which took place in northern Japan, and was the father of Nanbu Toshinao, the first daimyo of the Morioka Domain....

. In 1599 he succeeded his newly deceased father as head of the Nanbu clan

Nanbu clan

The ' was a Japanese samurai clan originating in northern Japan, specifically Mutsu Province . The Nanbu claimed descent from the Minamoto clan, and its members first enter the historical record as residents of Kai Province during the Kamakura period. The clan later moved to Mutsu...

. After 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...

's death, he improved his ties with 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...

. He took part in the Sekigahara Campaign, and was recognized by Ieyasu as lord of Morioka. Toshinao also took part in the Siege of Osaka

Siege of Osaka

The was a series of battles undertaken by the Tokugawa shogunate against the Toyotomi clan, and ending in that clan's destruction. Divided into two stages , and lasting from 1614 to 1615, the siege put an end to the last major armed opposition to the shogunate's establishment...

in 1614.

Toshinao was also responsible for improving mining operations within the Morioka domain.