The was a Japanese domain

Han (Japan)

The or domain was the name of the estate belonging to a warrior in Japan after the 17th century. The fiefs of the daimyos of the samurai class of Japan during the Edo period were called han.-Edo period:...

 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....

, located in 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....

 (modern-day Shimotsuma, Ibaraki

Shimotsuma, Ibaraki

is a city located in Ibaraki, Japan. The city was founded on June 1, 1954.In 2003 the estimated population was 37,150. Since the city area is 61.05 km² this gives a population density of 608.52 persons per km²...

). The domain was disestablished in 1871. Its last ruler, Inoue Masaoto

Inoue Masaoto

' was a Japanese daimyo of the Edo period, who served as the last lord of the Shimotsuma Domain. His court title was Iyo no kami. Under his leadership, Shimotsuma fought on the side of Aizu during the Boshin War....

, became a viscount

Viscount

A viscount or viscountess is a member of the European nobility whose comital title ranks usually, as in the British peerage, above a baron, below an earl or a count .-Etymology:...

 in the Meiji era.

Its government under the Inoue was perpetually unstable due to several of the Inoue lords dying young and in quick succession.

List of lords

• Tagaya clan (Tozama
  Tozama
  A ' was a daimyo who was considered an outsider by the rulers of Japan. The term came into use in the Kamakura period and continued until the end of the Edo period.-Edo period:...
  
  ; 60,000 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...
  
  )

1. Shigetsune (r. 1591-1601)

• Tokugawa clan
  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:...
  
   (Shinpan
  Shinpan (daimyo)
  The daimyo were certain relatives of the Tokugawa shoguns of Japan. While all shinpan were relatives of the shogun, not all relatives of the shogun were shinpan; an example of this is the Matsudaira clan of the Okutono Domain. The shinpan lords were also known as kamon daimyō  — non-daimyo...
  
  ; 100,000 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...
  
  )

1. Yorifusa
   Tokugawa Yorifusa
   , also known as Mito Yorifusa, was a Japanese daimyo of the early Edo period.- Biography :Known in his childhood as Tsuruchiyomaru, he was the eleventh son of Tokugawa Ieyasu, the first Tokugawa shogun...
   
    (r. 1606-1609)

• Period as tenryō, 1609-1615.

• Matsudaira clan (Echizen)
  Matsudaira clan
  The was a Japanese samurai clan that claimed descent from the Minamoto clan. It first originated in and took its name from Matsudaira village, in Mikawa Province . Over the course of its history, the clan produced many branches, most of which also centered around Mikawa Province...
  
   (Shinpan
  Shinpan (daimyo)
  The daimyo were certain relatives of the Tokugawa shoguns of Japan. While all shinpan were relatives of the shogun, not all relatives of the shogun were shinpan; an example of this is the Matsudaira clan of the Okutono Domain. The shinpan lords were also known as kamon daimyō  — non-daimyo...
  
  ; 30,000 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...
  
  )

1. Tadamasa
   Matsudaira Tadamasa
   was a Japanese daimyo of the early Edo period. The 2nd son of Yūki Hideyasu, he succeeded the family headship following his brother Tadanao's forced retirement.He had a magnificent residence constructed outside Edo Castle.-References:...
   
    (r. 1615-1616)

• Matsudaira clan (Hisamatsu)
  Matsudaira clan
  The was a Japanese samurai clan that claimed descent from the Minamoto clan. It first originated in and took its name from Matsudaira village, in Mikawa Province . Over the course of its history, the clan produced many branches, most of which also centered around Mikawa Province...
  
   (Shinpan
  Shinpan (daimyo)
  The daimyo were certain relatives of the Tokugawa shoguns of Japan. While all shinpan were relatives of the shogun, not all relatives of the shogun were shinpan; an example of this is the Matsudaira clan of the Okutono Domain. The shinpan lords were also known as kamon daimyō  — non-daimyo...
  
  ; 30,000 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...
  
  )

1. Sadatsuna (r. 1616-1618)

• Period as tenryō, 1619-1712.

• Inoue clan
  Inoue clan
  The ' was a samurai clan which came to prominence from the late Kamakura through Edo periods in Japanese history. Mention of an Inoue surname is found in Nara period records; however, the Inoue clan which later became prominent in the Edo period traces its antecedents to the Seiwa Genji line...
  
   (Fudai
  Fudai
  was a class of daimyo who were hereditary vassals of the Tokugawa in Edo period Japan. It was primarily the fudai who filled the ranks of the Tokugawa administration.-Origins:...
  
  ; 10,000 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...
  
  )

1. Masanaga (r. 1712-1720)
2. Masaatsu (r. 1720-1753)
3. Masatoki (r. 1753-1760)
4. Masamune (r. 1760-1784)
5. Masaki (r. 1784-1789)
6. Masahiro (r. 1789-1814?)
7. Masanori (r. 1814?-1816)
8. Masatomo (r. 1816-1819)
9. Masatami (r. 1819-1828)
10. Masakata (r. 1828-1845)
11. Masayoshi (r. 1845-1852)
12. Masanobu (r. 1852-1856)
13. Masakane (r. 1856-1866)
14. Masaoto (r. 1866-1871)