Taking a general view of Kizoku history in Japan, ancient Kizoku originated in the Gozoku (local ruling family) class that was first established during the period of Yamato sovereignty (ancient Japan sovereignty) period, and then in the first half of the Heian period, the Fujiwara clan and the Minamoto clan came to occupy the upper Kizoku class, replacing the former ancient Kizoku class.
日本における貴族の歴史を概観すると、ヤマト王権期の豪族層に由来する古代貴族がまず形成された後、平安時代前期には従来の古代貴族に代わって藤原氏や源氏が上流貴族層を占めていった。