Dosan had a nickname of "Mino no Mamushi" (viper of Mino Province), who became a Sengoku daimyo by destroying his master, but such an image of Dosan changed greatly in the process of compiling "Gifuken-shi" which started in 1960's.
「美濃の蝮」の異名を持ち、下克上によって戦国大名に成り上がったとされる斎藤道三の人物像は、1960年代に始まった『岐阜県史』編纂の過程で大きく転換した。