In fact, a storm of so-called Sonno Joi (slogan advocating reverence for the Emperor and the expulsion of foreigners) and tobaku (overthrowing the Shogunate) has been sweeping in Kyoto and Osaka of that time and incidents in which bakuri (shogunate official) such as officials in a magistrate's office were assassinated by supporters of tobakuha occurred frequently and therefore a theory that Uchiyama was assassinated by such supporters cannot be ruled out.
事実、当時の京都・大阪ではいわゆる「尊王攘夷・倒幕」の嵐が吹き荒れており、倒幕派志士による奉行所役人など幕吏の暗殺事件も多発していたことから、そうした志士による犯行説も捨て切れない。