|Figure 1: An 1801 preparatory sketch of The Right Honourable William Pitt by Henry Edridge|
On July 2, 1801, Lord Lowther wrote to Pitt on behalf of the artist Henry Edridge in order to request Pitt to sit for a portrait. Mr. Edridge especially wished that Pitt would come to his house to sit for the sketch. Meanwhile, Lowther had his doubts, admitting that he was “afraid you will reluctantly consent to this Proposal."  Pitt was not comfortable with those with whom he wasn't acquainted, and the thought of sitting to Edridge at the artist's house must not have been the most attractive proposition. Pitt had resigned as Premier five months earlier after seventeen years at the helm of state, and he had busily been avoiding most social engagements ever since that time. Furthermore, sitting for portraits had never been at the top of his list. Lord Lowther, however, was insistent, and he pressed the matter by saying that "Mr. Edridge speaks so highly of your Patience. He assures me he shall not put it to a severe tryal.”  Perhaps Lowther and Edridge were hoping to win Pitt over by emphasising his patience. Lowther finished the missive by asking Pitt to name a time that would be convenient for him.
In the end, Pitt did sit for Mr. Edridge in 1801, and the finished portrait was later engraved in 1804 by the artist Anthony Cardon. Lord Stanhope mentions in the forth volume of his biography of Pitt that "it is a small full-length, which represents Mr. Pitt in his every day attire and seated at his usual writing table. I have heard several persons who were intimate with Mr. Pitt declare themselves much struck at the faithful resemblance of this print." 
|Figure 2: William Pitt, an oil painting after the original by Henry Edridge (1801)|
|Figure 3: The Right Honourable William Pitt from an engraving by Anthony Cardon (1804)|
In Joseph Farington's diary of September 8, 1804, he makes a mention of Henry Edridge commenting upon Pitt's voice. Edridge had by then sketched Pitt's likeness, and he had apparently also seen him at Cashioberry, Lord Essex's residence, when Pitt was also present. Edridge "spoke of the deep, bell-toned, voice of Mr. Pitt, which, with his emphasis, made common things said by him seem to have a great effect."  Accounts such as the one above is simply the closest we can now get, and it leaves quite a lot to the imagination.
1. Lord Lowther to William Pitt, July 2, 1801. William Dacre Adams Papers. British Library. Add MS 89036/1/8, f. 39.
3. Earl Philip Henry Stanhope (1862) Life of the Right Honourable William Pitt, Volume 4. London: John Murray, p. 399.
4. Greig, J. (ed.) (1923) The Farington Diary, Vol. 2. London: Hutchinson & Co., p. 283.
Figure 1: An 1801 preparatory sketch of The Right Honourable William Pitt by Henry Edridge. Image Source
Figure 2: An 1801 oil painting of William Pitt after the original sketch by Henry Edridge. Image Source
Figure 3: The Right Honourable William Pitt, drawn by H. Edridge in 1801, and engraved in 1804 by Anthony Cardon. Image Source