Munenobu was a son of Nobutoki, and was the first head of the legal office and Kanto-bugyo, a commissioner of the appointment to an office in 1302, becoming the chief of suit together with Munekata HOJO in the following year.
宗宣はその宣時の子であり、1302年当時は一番引付頭人で官途奉行、翌年北条宗方とともに越訴頭人となる。