Sendai Domain

The , also known as the , was a domain of the Tokugawa Shogunate of Japan during the Edo period from 1600 to 1871.
The Sendai Domain was based at Aoba Castle in Mutsu Province, in the modern city of Sendai, located in the Tōhoku region of the island of Honshu. The Sendai Domain was ruled for its existence by the "tozama" "daimyō" of the Date, and under the "'kokudaka" system its income rating at 625,000 "koku" was the third-largest domain in Japan after the Satsuma Domain and Kaga Domain. The Sendai Domain was geographically the largest domain in northern Japan with its mostly-contiguous holdings covering most of southern Mutsu Province, including all of present-day Miyagi Prefecture, parts of southern Iwate Prefecture and northeastern Fukushima Prefecture. The Sendai Domain was the focal member of the Ōuetsu Reppan Dōmei against the Meiji Restoration during the Boshin War. The Sendai Domain was dissolved in the abolition of the han system in 1871 by the Meiji government.
Foundation.
The Sendai domain was founded in the closing years of the 16th century. When Date Masamune presented himself to Toyotomi Hideyoshi, who was undertaking the Odawara Campaign, he was granted the former fiefs of the Kasai 葛西 and Ōsaki 大崎 families, in return for his hereditary lands of Yonezawa 米沢, Aizu 会津, and Sendō 仙道. Upon entry into his new fief, Masamune took up residence in Iwadeyama Castle, and then started construction on Sendai Castle. The name of Sendai at this time was written 千代, however, Masamune changed it to 仙臺 (Later changed to the current 仙台）("hermit's platform," presumably alluding to Chinese mysticism). During the Sekigahara Campaign, the Date clan had been promised an increase in formal domain income to one million koku; however, as they were fighting with the Uesugi clan for their old lands in the Date district, this did not come to pass. It has been estimated that the Sendai Domain's "jitsudaka", or true income level, may have been somewhere between one and two million koku.
A relief sculpture on the base of Masamune's equestrian statue in Sendai Castle commemorates his entry into the city, which was then a small village.
"Daimyōs" of Sendai.
A list of the "daimyōs" of Sendai follows below, in chronological order:
Munemoto ruled briefly as the 14th and final lord of Sendai in 1868, when the domain was abolished. He thus became the first imperial governor of Sendai, serving until 1870, and was succeeded by a cousin, Date Muneatsu, who served as the second imperial governor until 1871.
Political structure.
The Sendai domain, like many other domains across the country, had its political center in its castle town (what became the modern city of Sendai). However, some retainers had their personal landholdings scattered throughout the domain's territory, as it was largely contiguous. Their presence provided a secondary, more local level of supervision. Certain of the higher-ranked retainers of Sendai even separated from the main domain and founded their own territories. Mizusawa Domain was one such short-lived subdomain. The Ichinoseki Domain, ruled by the Tamura family, was another subdomain, and survived to the end of the Edo period.
Retainer ranks and military structure.
There were eleven main ranks into which the retainers of the Sendai domain were divided.
Education.
The domain's school was known as the "Yōkendō" 養賢堂. A medical school was established in Sendai in 1822.
Boshin War.
In 1868, the Sendai Domain did not have forces active in the Battle of Toba–Fushimi; however, it did have a liaison office in Kyoto which kept track of the developing situation. It was approached several times by the nascent imperial government with requests to assist in subduing Aizu. Sendai did provide some cooperation to the new government, and accepted its envoys, under Kujō Michitaka, that spring. However, Date Yoshikuni, the "daimyō" of Sendai, opposed the harshness shown against Aizu, saying that it was like "a sentence being passed on one who never had a trial". Despite its efforts at negotiating on behalf of Aizu, Sendai was largely cooperative with the Kyoto government for much of the spring of 1868. This came to an end in May 1868, when Sendai men discovered that the Chōshū officer Sera Shūzō (who had accompanied the imperial delegation) had written a slanderous letter indicating a desire to describe "all in the north to be enemies," and to ask for reinforcements to subdue the entire region by armed force.
Naturally, the Sendai men were outraged that they too were to be punished despite their cooperation. A group of these men killed Sera, and pushed ahead with Sendai sponsorship of a northern coalition of domains. This became the Ōuetsu Reppan Dōmei.
After Boshin.
The Sendai domain was punished for its actions against the imperial army in the Boshin War, though not as severely as Aizu. Sendai's holdings were reduced; it was also made the center of the new government's operations in the north. Shiroishi Castle was also taken from Sendai, and given to the Nanbu clan which had been newly moved from Morioka Castle.
As with all others, the Sendai domain was abolished in 1871, by the "haihan chiken" order.