fourth estate

What is more barbarous than to see a nation […] where justice is lawfully denied him, that hath not wherewithall to pay for it; and that this merchandize hath so great credit, that in a politicall government there should be set up a fourth estate [tr. quatriesme estat] of Lawyers, breathsellers and pettifoggers […]

“Of what profession is Mr. Archer?”

“Of the Corporation of the Goosequill—of the Press, my boy,” said Warrington; “of the fourth estate.”