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Webster 1913 Edition

Noun.

A man who rings a bell, especially to give notice of anything in the streets. Formerly, also, a night watchman who called the hours.

Milton.

bellman ‎(plural bellmen)

A town crier
A bellhop or bellboy
- 2009 January 24, Harry Hurt Iii, “The Inaugural Glamour as Seen From a Taxi Stand”, in New York Times:
  In addition to opening doors, I would be expected to assist the bellmen and the valet parkers in tagging luggage, ticketing cars and directing limo traffic.