During the period of the Northern and Southern Courts following the fall of the Kamakura bakufu, the Edo clan took Yoshisada NITTA's side to support the Southern Court, but later switched to the Northern Court's side to serve Kamakura kubo (Governor-general of Kamakura Region).
鎌倉幕府が滅びると、江戸氏は南北朝時代(日本)の騒乱において初め新田義貞に従って南朝(日本)方につき、後に北朝(日本)に帰順して鎌倉公方に仕えた。