The Kawagoe clan expanded their power as developers and occupiers of Kawagoe no Sho (manor) in the Heian period, and later donated their own domain to Emperor Shirakawa and assumed the position as shokan (an officer governing shoen (manor)).
河越氏は、平安時代に河越荘の開発領主として勢力を伸ばし、自領を後白河天皇に寄進し、その荘官となった。