Yunagaya Domain
In 1670, his son and 2nd daimyō Naitō Tadaoki transferred 10,000 koku of newly developed rice lands to his younger son, Tōyama Masasuke, creating a subsidiary domain based at Yumoto jin'ya.
In 1676, Masasuke moved the location of his jin'ya from Yumoto to nearby Yunagaya and laid out the foundations of his castle town.
In 1680, as a reward to helping suppress a rebellion by Naitō Tadakatsu, the daimyō of Toba Domain, he was awarded an additional 2000 koku estate in Tamba Province.
Although the Naitō clan in Iwakidaira were transferred to Nobeoka Domain in distant Kyushu by the shogunate due to mismanagement in 1747, the Naitō of Yunagaya remained until the end of the Tokugawa shogunate despite a propensity of its rulers to die young and without heir.
The domain joined the Ōuetsu Reppan Dōmei during the Boshin War, but was captured by Imperial forces without a struggle.
The domain was reduced by only 1000 koku, and Masayasu was forced to abdicate in favor of the 14th and last daimyō, Naitō Masanori in 1869.
Naitō Tadakatsu was forced to commit seppuku, and Masasuke inherited 2000 koku of his holdings in Tamba Province.
In 1687, Masasuke was selected to serve in the guards at Osaka Castle, and his revenues were increased by another 3000 koku.
A highly fictionalized Naitō Masaatsu was the main character in the 2014 jidaigeki comedy film Samurai Hustle, where he was played by actor Kuranosuke Sasaki.
He turned the domain over to his adopted son, Naitō Sadayoshi in 1761 for unknown reasons and went into retirement.
Naitō Sadayoshi (内藤貞幹, 12 December 1746-17 July 1778) was the 6th daimyō of Yunagaya Domain.
He became daimyō in 1761 after his adopted father was received in formal audience by Shōgun Tokugawa Ieharu and unexpectedly went into retirement immediately thereafter.
He was the 10th son of Mizuno Tadakane, daimyō of Karatsu Domain, and was posthumously adopted in 1799 to be heir of Naitō Masayuki.
Naitō Masatami (内藤政民, 21 September 1806 - 23 October 1855) was the 10th daimyō of Yunagaya Domain.
He was the 5th son of Sakai Tadaari, daimyō of Shōnai Domain, and was adopted in 1824 to be heir of Naitō Masaakira when the latter unexpectedly decided to retire.
he built a han school modelled after the Chidōkan in his native Dewa Province, at which he also acted as an instructor.
He was the 3rd son of Matsudaira Mitsutsune, daimyō of Matsumoto Domain, and was adopted in 1855 to be heir of Naitō Masatami, who had only four daughters.
He was the posthumous third son of Naitō Masatsune, the 11th daimyō of Yunagaya and was adopted by Naito Masatoshi as his heir.
Meiji government forces occupied Yunagaya one month later, and Masayasu fled to Sendai.
He was forced to retire in favor of his adopted son, Masanori, and the domain was punished by the government by a reduction in its kokudaka of 1000 koku.
The Meiji government ordered him to succeed Naitō Masaysu, then under house arrest in Tokyo for the domain’s participation in the pro-Tokugawa Ōuetsu Reppan Dōmei in 1869.
Later that year, when the position of daimyō was abolished, he became imperial governor, and continued to rule Yunagaya even after the abolition of the han system in 1871.
