Chiba
Chiba lies on the eastern side of Edo Bay in Shimōsa. The Chiba family made Inohana its stronghold, traditionally from 1126, and its position gave them a base in the Bōsō country. The family remained prominent in eastern Japan through the Kamakura and Muromachi periods. In 1455 internal conflict brought the fall of the castle and disrupted the main line's long rule, changing the balance among local warrior houses.