Career
He was known as Ōura Tamenobu earlier on in his life. Tamenobu had at one time battled against Nanbu Nobunao. Following this, Tamenobu submitted to Toyotomi Hideyoshi and fought against the Hōjō during the siege of Odawara.
lieutenant was at this time that Tamenobu took the name of Tsugaru.
Tamenobu followed in capturing Namioka Castle during the year 1590. During the Azuchi-Momoyama period of the 17th century, Tamenobu supported the Tokugawa following the Sekigahara Campaign of 1600, at which point his revenues increased to 47,000 koku.