Moreover, in "Theory of sweet potato," the story of a sweet potato ronin in the next village Takeishi-son Village of Makuhari (present Hanamigawa-ku Ward, Chiba City) was mentioned as the person who spread the cultivation method of sweet potatos.
また、『甘藷説』の中では、薩摩芋の栽培法を伝えた人物として、幕張の隣村武石村（現千葉市花見川区）の薩摩浪人の話を伝えている。