Laudator Temporis Acti

What eighteenth century writer is Thomas Babington Macaulay describing in these words?

In the foreground is that strange figure which is as familiar to us as the figures among whom we have been brought up, the gigantic body, the huge massy face, seamed with the scars of disease, the brown coat, the black worsted stockings, the grey wig with the scorched foretop, the dirty hands, the nails bitten and pared to the quick.

Guess before you google. If you still can't figure out the answer, here are more clues, from the same essay by Macaulay:

Everything about him, his coat, his wig, his figure, his face, his scrofula, his St. Vitus's dance, his rolling walk, his blinking eye, the outward signs which too clearly marked his approbation of his dinner, his insatiable appetite for fish-sauce and veal-pie with plums, his inextinguishable thirst for tea, his trick of touching the posts as he walked, his mysterious practice of treasuring up scraps of orange-peel, his morning slumbers, his midnight disputations, his contortions, his mutterings, his gruntings, his puffings, his vigorous, acute, and ready eloquence, his sarcastic wit, his vehemence, his insolence, his fits of tempestuous rage, his queer inmates, old Mr. Levett and blind Mrs. Williams, the cat Hodge and the negro Frank, all are as familiar to us as the objects by which we have been surrounded from childhood.