Ren (rn)
True name
Ren — the true name, conferred at birth and inscribed everywhere the deceased wishes their existence to persist. To know a being's true name is to have power over them; the famous Isis-and-Re myth turns on Isis tricking Re into revealing his ren. Conversely, to erase a name (damnatio memoriae) is to destroy a component of the person — which is why pharaohs of disfavoured dynasties are systematically chiselled out of monuments.
Point 5 of 9 in Egyptian Nine-Part Soul
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Papyrus Turin 1993 — 'The Legend of Isis and the Name of Re' (primary_canonical)
Translated in Lichtheim, Ancient Egyptian Literature vol. 2.