Yoshimi

The Yoshimi of Musashi were a Seiwa Genji house descended from Minamoto no Noriyori, younger brother of the first Kamakura shōgun Minamoto no Yoritomo. Noriyori held Yoshimi Manor, but was exiled to Izu on suspicion of treason. In the early thirteenth century Yoshimi Tameyori took Yoshimi as his family name and his descendants served the Kamakura shogunate as gokenin.

The senior line was extinguished when Yoshimi Yoshiyo's plot against the Hōjō regents was discovered and he was executed. A separate cadet house, the Iwami Yoshimi, built up power around Tsuwano; they fought for Emperor Go-Daigo in 1333 before joining the Ashikaga, and later passed under the Ōuchi and then the Mōri.

In the early seventeenth century the last head of the Iwami Yoshimi was executed by Mōri Terumoto on suspicion of treason, and the Yoshimi name was discontinued when the adopted heir reverted to the Mōri surname.