Naotada was the eldest son of Nabeshima Naotomo, the 8th daimyō of Hasunoike. His mother was the daughter of Nijō Harutaka. He attended the domain academy as a child, and on the retirement of his father on July 28, 1848, he became the 9th daimyō of Hasunoike Domain.
In 1854, he was ordered by the Tokugawa shogunate to take responsibility of the defenses of the Nagasaki area against possible incursions by foreign ships, and was forced to raise and train troops, and build coastal defense fortifications. This greatly strained the already precarious finances of the domain, which could only be resolved by placing the domain into great debt. In 1864, he was ordered to participate in the First Chōshū expedition, and contributed 1000 soldiers to the Tokugawa army. By order of his retired father, he also dispatched troops to Kyoto to assist the Tokugawa forces in keeping public order.
During the Boshin War of the Meiji Restoration, he switched sides to the Satchō Alliance and dispatched Hasunoike’s forces under the command of his younger brother, Ishii Tadami, against the Ōuetsu Reppan Dōmei at Akita in support of Emperor Meiji.
In 1869, he was appointed "domain governor" as the title of daimyō was abolished, and with the abolition of the han system and subsequent merger of Hasunoike into the new Saga Prefecture in 1871, he moved to Tokyo. In 1884, his adopted son became a viscount (shishaku) under the kazoku peerage. In April 1885, he was granted the courtesy title of senior 5th rank (shō go i, 正五位).[2] He died at the clan’s Azabu residence in 1891, and his grave is at the Azabu Cemetery in Tokyo.
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