After FUJIWARA no Sadaie, who was the chief composer of the "Shin Chokusen wakashu," and his son FUJIWARA no Tameie died, the Fujiwara lineage and the poetry circles became divided into three schools: the Nijo, the Kyogoku, and the Reizei schools.
『新古今和歌集』編纂の中心人物だった藤原定家とその子の藤原為家が亡くなると、家系も歌壇も二条派・京極派・冷泉派の三派に分かれた。