Around that time during the end of the Edo period, the domain was divided into the 'Kanetetsu group' who were in Sonno-joi-ha (a group of activists who admired the Emperor and hated foreigners, advocating the need for expelling them from Japan) and the 'Fuigo party' who were in Sabaku-ha, and the Naruse family was near to the Kanetetsu group and the Takenokoshi family near to the Fuigo party.
幕末のこの時期、藩内は尊皇攘夷を唱える「金鉄組」と、佐幕的な立場を執る「ふいご党」とに分かれ、成瀬家は金鉄組、竹腰家はふいご党に近かった。