Obi Domain should not be confused with Ogi Domain.
| Conventional Long Name: | Obi Domain Japanese: 飫肥藩 |
| Common Name: | Obi Domain |
| Subdivision: | Domain |
| Nation: | Japan |
| Title Leader: | Daimyō |
| Capital: | Obi Castle |
| Membership Title1: | Province |
| Today: | Miyazaki Prefecture |
| Year Start: | 1617 |
| Year End: | 1871 |
| Event End: | Abolition of the han system |
| Era: | Edo period |
right|thumb|270px|Ito Sukeyori, final daimyō of Obi Domain was a feudal domain under the Tokugawa shogunate of Edo period Japan, in what is now central Miyazaki Prefecture. It was centered around Obi Castle in what is now Nichinan, Miyazaki and was ruled by the tozama daimyō Itō clan for all of its history.[1] [2] [3]
In the late Heian period, following the assassination of Kudō Suketsune as described in the Soga Monogatari, his descendants were scattered in various locations in Japan. One cadet branch of the clan were appointed jitō of Hyūga Province by the Kamakura shogunate and eventually came to control vast estates. The Itō clan assisted Ashikaga Takauji in his battles of the early Nanboku-chō period and were assigned management of the estates held in the name of Takauji's wife in Hyūga. The clan was in a constant struggle with the aggressive Shimazu clan to the south, and at one point in the Sengoku period was forced to flee Hyūga when the Shimazu conquered the province. The 12th hereditary chieftain of the clan, Itō Suketaka, after many hardships, became a vassal of Toyotomi Hideyoshi and distinguished himself during many of Hideyoshi's campaigns. He also assisted Hideyoshi in his conquest of Kyūshū and was restored to the former Itō holdings. During the 1600 Battle of Sekigahara, he remained at Osaka Castle due to illness, while secretly communicating with Tokugawa Ieyasu and ordering his son, Itō Sukeyaka to conquer Miyazaki Castle on Ieyasu's behalf. For these reasons, he was confirmed as daimyō of Obi Domain with his existing 57,000 koku territory. His descendants would continue to rule Obi over 14 generations until the Meiji restoration.
The third daimyō, Sukehisa, distributed 3,000 koku to his younger brother, Suketoyo in 1636, and the fourth daimyō, Sukemichi, distributed 3,000 koku to his younger brother, Sukeharu, in 1657. After that, the kokudaka of the domain remained at 51,000 koku. The territory had little arable land and was surrounded by mountains, forests and beaches. In the 1600s, the domain began cultivating Japanese cedar cuttings developing forestry as a major scope of income. Even today, Obi cedar is thriving as a specialty of this area. At the same time, fishing also played a role in the domain's finances.
The 11th daimyō, Suketami, established a han school in 1801, which was renamed Shintokudo in 1830. During the Bakumatsu period, the domain was in financial difficulties, and in 1851 the retainers' stipends were reduced to one-third, and in 1857 a thrift ordinance was issued. The 13th daimyō, Suketomo, endeavored to promote industrial development, reform the military system, build artillery forts for coastal defense, encourage sericulture, reform the transportation industry, and achieved many successes. The domain allied with Satsuma Domain in the Boshin War and served as the defender of Nijō Castle and Kōfu Castle. During his tenure the han school produced many talented people who would later serve in the Meiji government, including Komura Jutarō, who became Minister of Foreign Affairs and who signed the Portsmouth Treaty ending the Russo-Japanese War.
In 1871, due to the abolition of the han system, the domain became Obi Prefecture, and subsequently part of "Miyakonojō Prefecture", "Miyazaki Prefecture", and Kagoshima Prefecture, and was incorporated into the re-established Miyazaki Prefecture. The Ito clan was elevated to the kazoku peerage with the title of viscount in 1884.
As with most domains in the han system, Obi Domain consisted of several discontinuous territories calculated to provide the assigned kokudaka, based on periodic cadastral surveys and projected agricultural yields, g.[4] [5]
| Name | Tenure | Courtesy title | Court Rank | kokudaka | |
| Itō clan, 1617-1871 (Tozama) | |||||
| 1 | Itō Suketake (伊東祐兵) | 1587 - 1600 | Bungo-no-kami (豊後守) | Junior 5th Rank, Lower Grade (従五位下) | 57,000 koku |
| 2 | Itō Sukenori (伊東祐慶) | 1600 - 1636 | Shuri-no-kami (修理大夫) | Junior 5th Rank, Lower Grade (従五位下) | 57,000 koku |
| 3 | Itō Sukehisa (伊東祐久) | 1636 - 1657 | Yamato-no-kami (大和守) | Junior 5th Rank, Lower Grade (従五位下) | 57,000 --> 54,000 koku |
| 4 | Itō Sukemichi (伊東祐由) | 1657 - 1661 | Sakyō-no-suke (左京亮) | Junior 5th Rank, Lower Grade (従五位下) | 54,000 --> 51,000 koku |
| 5 | Itō Sukezane (伊東祐実) | 1661 - 1714 | Yamato-no-kami (大和守) | Junior 5th Rank, Lower Grade (従五位下) | 51,000 koku |
| 6 | Itō Sukenaga (伊東祐永) | 1714 - 1739 | Shuri-no-suke (修理亮) | Junior 5th Rank, Lower Grade (従五位下) | 51,000 koku |
| 7 | Itō Sukeyuki (伊東祐之) | 1739 - 1744 | Yamato-no-kami (大和守) | Junior 5th Rank, Lower Grade (従五位下) | 51,000 koku |
| 8 | Itō Suketaka (伊東祐隆) | 1744 - 1757 | Shuri-no-kami (修理大夫) | Junior 5th Rank, Lower Grade (従五位下) | 51,000 koku |
| 9 | Itō Sukeyoshi (伊東祐福) | 1757 - 1781 | Yamato-no-kami (大和守) | Junior 5th Rank, Lower Grade (従五位下) | 51,000 koku |
| 10 | Itō Sukeatsu (伊東祐鐘) | 1781 - 1798 | Sakyō-no-suke (修理亮) | Junior 5th Rank, Lower Grade (従五位下) | 51,000 koku |
| 11 | Itō Suketami (伊東祐民) | 1798 - 1812 | Shuri-no-kami (修理大夫) | Junior 5th Rank, Lower Grade (従五位下) | 51,000 koku |
| 12 | Itō Sukehiro (伊東祐丕) | 1812 - 1814 | Shuri-no-kami (修理大夫) | Junior 5th Rank, Lower Grade (従五位下) | 51,000 koku |
| 13 | Itō Suketomo (伊東祐相) | 1814 - 1869 | Sakyō-no-daibu (右京大夫) | Junior 5th Rank, Lower Grade (従五位下) | 51,000 koku |
| 14 | Itō Sukeyori (伊東祐帰) | 1869 - 1871 | Shuri-no-kami (修理大夫) | Upper 4th Rank (正四位) | 51,000 koku |