The name of the "Oshima-bon manuscript" comes from the fact that an old-established family in Sado sold it to Masataro OSHIMA in 1929 or so, after which it then became widely known.
佐渡の旧家から1929年（昭和4年）ころ大島雅太郎が買い取って世に出たためこの大島本という名がついた。