prolocutor
A spokesman, one who speaks on behalf of others.
Could vſe perſwaſions more pathetical.
Not Hermes Prolocutor to the Gods,A speaker; a presiding officer of an assembly
A speaker; a presiding officer of an assembly: — A chairman of the lower house of a convocation in the Anglican Church.
Where it comes from
Inherited from Middle English prolocutor, a learned borrowing from Medieval Latin prōlocūtor.
Adapted from the Wiktionary entry prolocutor (CC BY-SA 4.0).