Disputes between the head and branch families often occurred in the following cases: the head family registration was not submitted because the head-and-branch relationship was not clear; suzerainty was transferred to a branch family after the head family had lost its social standing; or a branch family was established because the eldest child born out of wedlock or the adopted heir was disinherited.
本分家関係が曖昧で不明確なために未提出であった場合や、本宗家の家格が低下した後、分家・別家に宗主権が遷移した場合、庶長子や養嗣子が廃嫡され別家した場合などで論争となった。