德川家重
was the 6th "daimyō" of Izumi Domain. He was the 4th son of Honda Tadatomo. His wife was a daughter of Hori Naotada of Suzaka Domain. He was posthumously adopted on the death of his older brother, Honda Tadanori in 1860, and was received in formal audience by Shōgun Tokugawa Ieshige. In 1863, he became "jisha-bugyō" and the same year was also appointed "sōshaban". In 1864, he advanced to the post of "wakadoshiyori", but was dismissed only five months later. In 1866, he again became "wakadoshiyori", but again resigned after ten months. In 1868, with the start of the Boshin War, he favored the imperial cause, but was pressured into joining the pro-Tokugawa Ōuetsu Reppan Dōmei instead. As a result, the domain was invaded by the forces of the Satchō Alliance and Izumi "jin’ya" was burned during the Battle of Iwaki. Tadatoshi was forced to flee to Sendai. A few months later he surrendered to the Meiji government and was placed under house arrest, with the domain reduced in "kokudaka" by 2000 "koku" He was released from house arrest]in 1870 and his court rank restored. He died in 1883 and his grave is at the temple of Kōfuku-ji in Mukojima, Sumida, Tokyo.