Iwakura family

...In the early Kamakura period, Michichika's son Michitomo established the Horikawa family, Sadamichi established the Tsuchimikado family, Michikata established the Nakanoin family, and his grandson Michiari established the Rokujo family. Furthermore, in the Edo period, Harumichi's grandson Tomoki established the Iwakura family, Ariyoshi established the Chigusa family, Michikata's grandson Michikazu established the Higashikuze family, Atsumichi's son Michinaga established the Kuze family, his grandson Suemichi established the Baikei family, and Chigusa Ariyoshi's son Masanaga established the Uematsu family. The Koga family was naturally held a high official position not only among these branch families but also among the Genji in general, and they often served as Genji choja and betto (chief priests) of both Shogaku and Junna-in temples. In particular, after Masasada received an imperial decree from Emperor Toba that the betto positions would be permanently assigned to his family, they were filled by Masasada's descendants, such as Koga and Nakain, until the third shogun of the Muromachi shogunate, Ashikaga Yoshimitsu, took them away. ...

*Some of the terminology that refers to the Iwakura family is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…鎌倉時代初期に権勢を得た通親の男通具が堀河家を，定通が土御門（つちみかど）家を，通方が中院（なかのいん）家を，孫通有が六条家を興した。さらに江戸時代に入り晴通の孫具起が岩倉家を，有能が千種家を，通堅の孫通廉が東久世家を，また敦通の男通式が久世家を，孫季通が梅渓家を興し，千種有能の男雅永が植松家を興すなど，庶流の家も多い。久我家はこれら庶流のみならず広く源氏全般の中でも官位がおのずから高いため，源氏長者および奨学･淳和両院別当となることも多く，とくに雅定が鳥羽院より両院別当を永く当家に付すとの勅定を得てより，室町幕府3代将軍足利義満がこれを奪うまで，久我･中院など雅定の子孫の中から補せられた。…

※「岩倉家」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報