nomenclator

nōmenclātor ōris, m

nomen+1 CAL-, one who calls by name, a monitor (a slave who prompts his master with names).

nomenclator
nōmenclātor (nōmencŭlātor, Mart. 10, 30, 23; Suet. Aug. 19; id. Calig. 41; id. Claud. 34), ōris, m...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
Nomenclator
·noun One who calls persons or things by their names. II. Nomenclator ·noun One who gives names to ...

Webster's Dictionary of the English Language