An assistant who specializes in providing timely and spatially relevant reminders of the names of persons and other socially important information
True. Sir John Daw, sir, your wife's servant, this.
One who assigns or constructs names for persons or objects or classes thereof, as in a scientific classification system
The nomenclator's method is first to look about and see if the place has any natural features to suggest a name—like Rocking Stone Farm or White Birches.
{i} one who allots official names and terms (especially used in the classification of items in a scientific field); book that comprises lists of words; (Archaic) person who announces the guests by calling out their names