Together with his olderbrother, Yasumori, he worked for the shogunate government, and when the regent Tokiyori HOJO died in 1263, he became a priest, calling himself Ronin (later Dokyo).
兄の泰盛と共に幕政に参加し、弘長3年（1263年）に執権北条時頼が死去すると、炉忍（後に道供）と号して出家した。