Iwakitaira Domain was a feudal domain under the Tokugawa shogunate of Edo period Japan., based at Iwakitaira Castle in southern Mutsu Province in what is now part of modern-day Iwaki, Fukushima. Its s

The Sōma clan was a Japanese samurai clan that ruled the northern Hamadōri region of southern Mutsu Province in the Tōhoku region of northern Japan for over 700 years, from the Kamakura period through