in memory (of): used on tombstones, in obituary notices, etc.
Origin of in memoriamClassical Latin
In memory of; as a memorial to. Used especially in epitaphs.
Origin of in memoriamFrom Latin in memoriam, to the memory (of) : in, in, into + memoriam, accusative of memoria, memory.
- Sometimes followed by a reference to the one being remembered: then, either a preposition is used (typically of) or in memoriam is followed directly by the reference (as in in memoriam: Christa McAuliffe or in memoriam Christa McAuliffe).
From Latin in memoriam (“into memory”).