The name of Yuranosuke's wife, "Oishi," refers to an actual person, "Kuranosuke OISHI," and Honzo's "Asaki takumi no Enya-dono" is also derived from an actual person "Takuminokami ASANO," and "En" (salt), a local product in Ako.
由良之助の妻「お石」は実際の「大石内蔵助」を指し、本蔵の「浅き巧の塩谷殿」は実際の「浅野内匠頭」と、赤穂の名産「塩」を利かせている。