Sakai clan
The Chiba clan's power and influence declined because of wars around the Kantō region during the Nanboku-chō and Muromachi periods. In the 16th century, instead of the Chiba clan, the Hara clan, which was one of the servants of Chiba clan, wielded power in this region. In the Sengoku period, the Hara clan was forcibly removed by Ashikaga Yoshiaki (足利義明, not to be confused with 足利義昭). Then, Ashikaga Yoshiaki was also removed by the Sakai (酒井 not to be confused with the Sakai clan in Mikawa) clan, which was one of the servants of the Satomi (里見) clan. Finally both the Chiba and Sakai clans were annihilated by Toyotomi Hideyoshi.