was a Japanese samurai

Samurai

is the term for the military nobility of pre-industrial Japan. According to translator William Scott Wilson: "In Chinese, the character 侍 was originally a verb meaning to wait upon or accompany a person in the upper ranks of society, and this is also true of the original term in Japanese, saburau...

 of the late 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....

.

Norinobu was influential in the last days of the Tokugawa 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...

, being appointed a wakadoshiyori

Wakadoshiyori

The ', or "Junior Elders", were high government officials in 17th century Tokugawa Japan. The position was established around 1631, but appointments were irregular until 1662....

 shortly before its demise and working for the new government to show clemency to the Tokugawa family.

Genealogy

Born the 3rd son of Imagawa Yoshiyori, he was a hatamoto

Hatamoto

A was a samurai in the direct service of the Tokugawa shogunate of feudal Japan. While all three of the shogunates in Japanese history had official retainers, in the two preceding ones, they were referred to as gokenin. However, in the Edo period, hatamoto were the upper vassals of the Tokugawa...

 who headed one of the 26 families holding the position of kōke

Koke

A was a noble ranking below a daimyo in Japan during the Edo period. Their lands were assessed at less than ten thousand koku, making them ineligible for the rank of daimyo.Unlike hatamoto, whose duties were military, the kōke had certain privileged missions...

(master of ceremonies) in the Tokugawa 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...

, a position whose most famous holder was Kira Yoshinaka

Kira Yoshinaka

was a kōke . His court title was Kōzuke no suke. He is famous as the adversary of Asano Naganori in the events of the Forty-seven Ronin...

 of Chushingura

Chushingura

is the name for fictionalized accounts of the historical revenge by the Forty-seven Ronin of the death of their master, Asano Naganori. Including the early , the story has been told in kabuki, bunraku, stage plays, films, novels, television shows and other media...

 fame.

He was a direct descendant of the famed Imagawa Yoshimoto

Imagawa Yoshimoto

was one of the leading daimyo in the Sengoku period Japan. Based in Suruga Province, he was one of the three daimyo that dominated the Tōkaidō region. He was one of the dominant daimyo in Japan for a time, until his death in 1560....

 and his son Ujizane

Imagawa Ujizane

was a Japanese daimyo who lived from the mid-Sengoku through early Edo periods. He was the son of Imagawa Yoshimoto, and the father of Imagawa Norimochi and Shinagawa Takahisa.-Early life:Ujizane was born in Sunpu; he was the eldest son of Imagawa Yoshimoto...

.

Later life

Living the rest of his life in quiet obscurity, Norinobu died in 1887. Because his son Imagawa Yoshihito died young, he was left heirless, and the direct line of descent in the Imagawa family came to an end.