It could also be the result of purging by the Tokugawa family who feared his financial and political strength, and to set an example to other daikan who may have been prone to committing crimes Incident of Nagayasu OKUBO.
また、彼の財力と権勢を警戒した徳川家による粛清や、不正を行い易い他の代官に対する見せしめの意味もあると思われる（大久保長安事件）。