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

Togo

Articles 27, 28, and 29 in the 1992 Togolese Constitution protect private property, the home, private life, and image, and correspondence. Article 28 is explicit to the right to privacy, while Articles 27 and 29 fit into the privacy penumbras subscribed by the United States (Constitute Project, “Togo’s Constitution of 1992 with Amendments through 2007”).

https://constituteproject.org/constitution/Togo_2007?lang=en

Privacy Rights · Country sources (all rights) · Years mentioned: 1992, 2007 · Last edited 2022-12-28 · Edit on GitHub