One who writes epitaphs; a person who composes inscriptions for gravestones or memorials.
From 'epitaph' (an inscription on a tomb) plus '-er' (one who), creating the agent noun for someone who writes epitaphs.
Being an epitapher in ancient Rome was actually a serious job—writing the perfect memorial inscription for someone's tomb required both skill and sensitivity.
Complete word intelligence in one call. Free tier — 50 lookups/day.