Edo clan

The Edo clan were a minor offshoot of the Taira clan, and first fortified the settlement known as Edo, which would later become Tokyo. The Imperial Palace now stands at this location.

During the Azuchi-Momoyama period, the clan was renamed the Kitami clan.

The clan originated in Chichibu in Musashi Province (now Saitama Prefecture). In the late 12th century, Edo Shigetsugu moved south and fortified the little hill at Edo, located where the Sumida River enters Tokyo Bay. This area later became the Honmaru and Ninomaru portions of Edo Castle. There, the Edo grew in military strength under the second patriarch, Edo Shigenaga.

In August 1180, Shigenaga attacked Muira Yoshizumi, an ally of the rival Minamoto clan. Three months later, he switched sides just as Minamoto Yoritomo entered Musashi. Shigenaga assisted the Minamoto in overthrowing the Taira in Kyoto. In return, Yoritomo granted Shigenaga seven new estates in Musashi Province, including Kitami in what is now Tokyo's western Setagaya Ward.

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