Ashina
The Ashina were a warrior family who ruled Aizu in Mutsu from Kurokawa Castle. Their ancestor Sawara Yoshitsura received Aizu for his service in the northern campaign of 1189, and his descendants took the Ashina name.
Ashina Moriuji expanded his power in Aizu after succeeding his father in 1541. The family weakened after his death in 1580, and in 1589 Date Masamune defeated Ashina Yoshihiro at Suriagehara and seized Kurokawa Castle.