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

Laos

Privacy rights are scarcely protected in Laos. The revised 2015 constitution protects violations of life, body, integrity, and property in Article 42, which has been amended since the implementation of the constitution in 1991 (Constitute Project, “Lao People’s Democratic Republic 1991 rev. 2015”).

https://media.bloomsburyprofessional.com/rep/files/laos-constitution-1947-1949-englishx.pdf https://constituteproject.org/constitution/Laos_2015?lang=en

Privacy Rights · Country sources (all rights) · Years mentioned: 1947, 1949, 1991, 2015 · Last edited 2022-12-28 · Edit on GitHub