in the northern theater of the Boshin War, as well as becoming signatories to the pact that created the Ōuetsu Reppan Dōmei in 1868. The head of this clan line was ennobled as a "Count" in the Meiji period. A cadet branch was created in 1647. These Sakai were installed from 1647 through 1868 at Matsumine Domain (20,000 koku) in Dewa Province; the castle at Matsumine was constructed in 1779. The head of this clan line was ennobled as a "Viscount" in the Meiji period. Another cadet branch was founded by Sakai Masachika (+1576). Vassal of the Tokugawa – Tokugawa Nobutada, Tokugawa Kiyoyasu and Tokugawa Hirotada. In 1561, he was installed at Nishio Castle in Mikawa Province, and the security of the castle was confided in him. In 1590, Sakai Shigetada, the son of Masachika, received the Kawagoe Domain (15,000 koku) in Musashi Province; then in 1601, he was installed at Umayabashi Domain (35,000 koku) in Kōzuke Province. In 1749, the descendants of Sakai Tadakiyo (1626–1681) were transferred to Himeji Domain (150,000 koku) in Harima Province ; and they remained daimyō at Himeji until the Meiji period. This cadet branch of the Sakai had been created in 1590. The head of this clan line was first ennobled as a "Count" and in the Meiji period. Yet another cadet branch of the Sakai had been created in 1668, These Sakai were installed from 1668 through 1868 at Katsuyama Domain (12,000 koku) in Awa Province. The head of this clan line was ennobled as a "Viscount" in the Meiji period. A further cadet branch of the Sakai had been created in 1681, These Sakai were installed in 1681 through 1868 at Isezaki Domain (20,000 koku) in Kōzuke Province. The head of this clan line was ennobled as a "Viscount" in the Meiji period. Sakai Tadatoshi (1562–1627) received the fief of Tanaka Domain (10,000 koku) in Suruga Province in 1601; then his holding was transferred in 1609 to Kawagoe Domain (30,000 koku) in Musashi province. Sakai Tadakatsu (1587–1662) was installed in 1634 through 1868 at Obama Domain (103,500 koku) in Wakasa Province . This cadet branch of the Sakai had been created in 1590. The head of this clan line was ennobled as a "Count" in the Meiji period. Finally, another cadet branch of the Sakai had been created in 1682. These Sakai were installed in 1682 through 1868 at Tsuruga Domain (10,000