Noun clator
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Nomenclator (Latin, formed from nomen = name and clator = regression of the verb clamare = to call out, thus "name denominator") is either a servant, a freedman or a slave who is in the service of a rich Roman patrician and who has the task to memorize the names and looks of all clients who pay their respects to the patron . He then helps his master at receptions, banquets and also in public by accompanying him on exits on the street. When meeting a client, he must tell his master the name so that the patron can address and greet his client politely and courteously. Ignoring a client without this attention is considered an insult and could cost the patron votes in the next election. The personnel knowledge of the noun clator is therefore particularly important in large companies that have many clients and are applying for offices. The Nomenclator also determines the order in which the guests come first, names each dish that is served at a banquet and its special advantages.