 Nobuaki was the 5th son of Tamura Akiate, a "hatamoto" from a subsidiary line of the Tamura clan．As the "daimyō" of Ichinoseki, Tamaura Tatsuaki had no sons, he was adopted as heir in February 1696 and became "daimyō" on the death of Tatsuaki in 1708.He died in 1727 at the age of 58 after an uneventful tenure, and his grave is at the clan mortuary temple of Shoun-ji in Ichinoseki.He was succeeded by the son of Date Muneyoshi of Uwajima Domain, whom he had adopted as his son under the name of Tamura Muraaki.