His father was either Tokikata HOJO or Tokiie HOJO, both of whom were locals in Izu Province, and his mother was a daughter of Tamefusa BAN, a jyo (third-rank official) of Izu.
伊豆国の在地豪族の北条時方もしくは北条時家の子、母は伊豆掾伴為房の娘。