What is the oldest written source in this country that mentions this right?

Italy

Article 21 of Italy’s 1948 Constitution protects press freedom: “Anyone has the right to freely express their thoughts in speech, writing, or any other form of communication. The press may not be subjected to any authorisation or censorship” (Constitute Project, “Italy's Constitution of 1947 with Amendments through 2012”).

Freedom of the Press · Country sources (all rights) · Years mentioned: 1947, 1948, 2012 · Last edited 2022-12-28 · Edit on GitHub