discourser

DAW: There's Aristotle, a mere common-place fellow; Plato, a discourser; Thucydides and Livy, tedious and dry; Tacitus, an entire knot: sometimes worth the untying, very seldom.

From Epicoene: Or, the Silent Woman by Ben Jonson

He is described by Clarendon as "a man of grave aspect, of a presence that drew respect, and of great parts and ability, but passionate and supercilious and too voluminous a discourser in council."

From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" by Various

As I belong to worship and affect In honour honesty, the tract of ev'rything Would by a good discourser lose some life, Which action's self was tongue to.

From King Henry VIII by William Shakespeare

He was a very pleasant discourser, in earnest and in jest, and, therefore, very grateful to all kind of company, where he was not the less esteemed for being very rich.

From Lives of the Poets, Volume 1 by Samuel Johnson

He was already dreaded for his prowess in argument, his dictatorial manners and vivid flashes of wit and humour, the more effective from the habitual gloom and apparent heaviness of the discourser.

From Samuel Johnson by Sir Leslie Stephen