regarding the above imiki that is the head of a clan , supplemental change of the clan name and hereditary title was made . 氏上である忌寸以上についても、補足的な氏姓の変更が行われている。
ancient uji were peer groups of many families joined by blood relationships or blood consciousness , and the head of a powerful family became the head of the uji and occupied a position similar to the head of a clan . 古代のウジは、血縁関係ないし血縁意識によって結ばれた多くの家よりなる同族集団で、有力家族の長が氏上（うじのかみ、うじがみ）となり、族長的な地位に立っていた。
in addition , it also happened that , while a father , the head of a clan , was in kyoto and his son in his original province , the father could not speedily handle disturbances that occurred in the province (an example: shigetada hatakeyama ). また、惣領である父が京にあって子が地元にいる場合、地元で騒乱があっても迅速な対応が出来かねるということもあった（例：畠山重忠）。
there were also some demerits: for example , the post of obanyaku was sometimes assumed not by the head of a clan but by his son , and in such a case , when the head of the clan died while his son was in kyoto , it sometimes happened that the postion of head was deprived of by his younger brother or his uncle (an example: hirotsune kazusa ). 逆にデメリットとして、こうした大番役は惣領に限らずその子が請け負う事もあったが、子が京にいる間に惣領がなくなった場合、地元で弟・叔父などが勝手に惣領の地位を収奪してしまう、という事態が起きることもあった（例：上総広常）。
