Yasutoki HOJO set up an office of administration for the soryo (government) family and laid down provisions for governing so that he could take up the reins of the Hojo clan, which had continued to set up branch families.
北条泰時は分家を重ねた北条一門を統率する為、惣領家の家政機関を置き、家政運営のための条文を定めた。