During his stay in Kyoto, he caused the Teradaya Incident on June 1, 1862 in order to subdue the extremist group of the Sonjo-ha party (supporting the principle of 'Sonno Joi' advocating reverence for the Emperor and the expulsion of foreigners) of his own domain including Shinshichi ARIMA who gathered in Teradaya Inn (present Fushimi Ward, Kyoto City, Kyoto Prefecture).
京都滞在中の4月23日、伏見（現京都府京都市伏見区）の寺田屋に集結した有馬新七ら自藩の尊攘派過激分子を討伐する寺田屋事件を起こす。