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

Eswatini

Article 14(1) names and protects fundamental rights, and subsection C reads “protection of the privacy of the home and other property rights of the individual” (Constitute Project, “Eswatini 2005”). Previous iterations of the constitutions from 1967 and 1968 could not be found.

https://constituteproject.org/constitution/Swaziland_2005?lang=en

Privacy Rights · Country sources (all rights) · Years mentioned: 1967, 1968, 2005 · Last edited 2022-12-28 · Edit on GitHub