was a Tokugawa

Tokugawa clan

The was a powerful daimyo family of Japan. They nominally descended from Emperor Seiwa and were a branch of the Minamoto clan by the Nitta clan. However, the early history of this clan remains a mystery.-History:...

 general and chief retainer at the end of the Sengoku

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...

 and start of the 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....

. He was the father of Aoyama Tadatoshi

Aoyama Tadatoshi

was a Japanese daimyo of the early Edo period.-Biography:Tadatoshi was the son of Aoyama Tadanari, a Tokugawa vassal of the Sengoku period who was born in Mikawa Province...

, and the Aoyama

Aoyama, Tokyo

is a neighborhood of Tokyo, located in the northeastern Minato Ward. During the Edo Period, Aoyama was home to various temples, shrines, and samurai residences. The name Aoyama derived from a samurai named Aoyama Tadanari who served the Tokugawa Shogunate and held his mansion in this area...

 region of Shibuya

Shibuya, Tokyo

is one of the 23 special wards of Tokyo, Japan. As of 2008, it has an estimated population of 208,371 and a population density of 13,540 persons per km². The total area is 15.11 km²....

 is named after him.

History

The Aoyama clan

Aoyama clan

The ' was a Japanese clan which came to prominence during the Sengoku period. Its origins were in Kōzuke Province; however, members of the family moved to Mikawa Province and served the Matsudaira clan...

 were provincial lords of Dōdo village, Nukata District

Nukata District, Aichi

is a rural district located in central Aichi, Japan. As a result of various consolidations and mergers of municipalities, most of the district was incorporated into the cities of Okazaki and Toyota, and now consists of only the town of Kōta....

 in Mikawa Province

Mikawa Province

is an old province in the area that today forms the eastern half of Aichi Prefecture. It was sometimes called . Mikawa bordered on Owari, Mino, Shinano, and Tōtōmi Provinces....

 (present Okazaki

Okazaki, Aichi

is a city located in Aichi Prefecture, Japan. As of August 2011, the city had an estimated population of 373,339 and a population density of 964 persons per km². The total area was 387.24 km².-Geography:...

, Aichi

Aichi Prefecture

is a prefecture of Japan located in the Chūbu region. The region of Aichi is also known as the Tōkai region. The capital is Nagoya. It is the focus of the Chūkyō Metropolitan Area.- History :...

). Aoyama Tadakado, Tadanari's father, served both Matsudaira Hirotada

Matsudaira Hirotada

was the lord of Okazaki Castle in Mikawa province, Japan during the Sengoku Period of the 16th century. He is best known for being the father of Tokugawa Ieyasu, founder of the Tokugawa Shogunate....

 and 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...

, and thus Tadanari served near Ieyasu since he was young. In 1572, his father died in battle with Takeda Shingen

Takeda Shingen

, of Kai Province, was a preeminent daimyo in feudal Japan with exceptional military prestige in the late stage of the Sengoku period.-Name:Shingen was called "Tarō" or "Katsuchiyo" during his childhood...

 and Tadanari inherited the estate.

Tadanari was highly trusted by Ieyasu, and in 1585 he commanded him to guard his son Hidetada

Tokugawa Hidetada

was the second shogun of the Tokugawa dynasty, who ruled from 1605 until his abdication in 1623. He was the third son of Tokugawa Ieyasu, the first shogun of the Tokugawa shogunate.-Early life :...

. In 1588, Tadanari accompanied Hidetada to the capital

Kyoto

is a city in the central part of the island of Honshū, Japan. It has a population close to 1.5 million. Formerly the imperial capital of Japan, it is now the capital of Kyoto Prefecture, as well as a major part of the Osaka-Kobe-Kyoto metropolitan area.-History:...

 where he was granted Junior Fifth Rank, Lower Grade of Hitachi Province

Hitachi Province

was an old province of Japan in the area of Ibaraki Prefecture. It was sometimes called . Hitachi Province bordered on Iwashiro, Iwaki, Shimousa, and Shimotsuke Provinces....

 by 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...

. In 1590 Ieyasu relocates to Kantō

Kanto region

The is a geographical area of Honshu, the largest island of Japan. The region includes the Greater Tokyo Area and encompasses seven prefectures: Gunma, Tochigi, Ibaraki, Saitama, Tokyo, Chiba, and Kanagawa. Within its boundaries, slightly more than 40 percent of the land area is the Kantō Plain....

 and promotes Tadanari to magistrate

Bugyo

', often translated as "commissioner" or "magistrate" or "governor," was a title assigned to government officers in pre-modern Japan; other terms would be added to the title to describe more specifically a given commissioner's tasks or jurisdiction....

 of Edo

Edo

, also romanized as Yedo or Yeddo, is the former name of the Japanese capital Tokyo, and was the seat of power for the Tokugawa shogunate which ruled Japan from 1603 to 1868...

 with lands worth 5,000 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...

 (increased by 2,000 koku in 1593). His estates centered on Harajuku

Harajuku

Harajuku is the common name for the area around Harajuku Station on the Yamanote Line in the Shibuya ward of Tokyo, Japan....

 village and extended from part of Akasaka

Akasaka, Tokyo

is a residential and commercial district of Minato, Tokyo, located west of the government center in Nagatachō and north of the Roppongi nightlife district....

 to Shibuya

Shibuya, Tokyo

is one of the 23 special wards of Tokyo, Japan. As of 2008, it has an estimated population of 208,371 and a population density of 13,540 persons per km². The total area is 15.11 km²....

. Present day Aoyama

Aoyama, Tokyo

is a neighborhood of Tokyo, located in the northeastern Minato Ward. During the Edo Period, Aoyama was home to various temples, shrines, and samurai residences. The name Aoyama derived from a samurai named Aoyama Tadanari who served the Tokugawa Shogunate and held his mansion in this area...

 is so named because one of Tadanari's mansions was located there.

In 1600, Tadanari joined Hidetada's army 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...

 and obtained 15,000 koku of lands between Kazusa Province

Kazusa Province

was a province of Japan in the area of modern Chiba Prefecture. It lies on in the middle of the Bōsō Peninsula , whose name takes its first kanji from the name of Awa Province and its second from Kazusa and Shimōsa Provinces. Its abbreviated form name was or .Kazusa is classified as one of the...

 and Shimōsa Province. In addition to being the Edo magistrate, he also served as the general magistrate for the entire Kantō region. After the start of the Edo shogunate

Tokugawa shogunate

The Tokugawa shogunate, also known as the and the , was a feudal regime of Japan established by Tokugawa Ieyasu and ruled by the shoguns of the Tokugawa family. This period is known as the Edo period and gets its name from the capital city, Edo, which is now called Tokyo, after the name was...

, he was heavily involved in shogunate policy along with Honda Masanobu

Honda Masanobu

was a commander and daimyo in the service of Tokugawa Ieyasu in Japan during the Azuchi-Momoyama and Edo periods.In 1563, when an uprising against Ieyasu occurred in Mikawa Province, Masanobu took the side of the peasants against Ieyasu...

 and Naitō Kiyonari. Along with Naitō in 1606, he is temporarily sentenced to house arrest but is soon pardoned.