E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
A Sir Jerry Witwold. A pert, talkative coxcomb, vain of a little learning; one who swims with the stream of popular opinion, and gives his judgment on men and books as if he were Sir Oracle, A great pretender to virtue and modesty, like Mr. Pecksniff, but always nosing out smut and obscenity, which he retails with virtuous indignation.