'The Duke of Cumberland dropped that he meant by this outrageous behaviour to force the King to yield to terms in favour of his Duchess, having gotten entire command over the Prince. The latter, however, had something of the duplicity of his grandfather, Prince Frederick, and, after drawing in persons to abuse the King, would betray them to the King. Nor in other respects did his heart turn to good. In his letters to Mrs. Robinson, his mistress, he called his sister, the Princess Royal, a poor child, "_that bandy-legged b--- h, my sister_;" and, while he was talking of Lord Chesterfield in the most opprobrious terms, he was sending courier after courier to fetch him to town. That Lord's return produced a scene that divulged all that till now had been only whispered.
'One night, as soon as the King was gone to bed, the Prince, with St. Leger and Charles Windham, his chief favourites, and some of his younger servants, the Duke of Cumberland, and George Pitt, son of Lord Rivers, went to Blackheath to sup with Lord Chesterfield, who, being married, would not consent to send for the company the Prince required. They all got immediately drunk, and the Prince was forced to lie down on a bed for some time. On his return, one of the company proposed as a toast, "_A short reign to the King_." The Prince, probably a little come to himself, was offended, rose and drank a bumper to "_Long live the King_." The next exploit was to let loose a large fierce house-dog, and George Pitt, of remarkable strength, attempted to tear out its tongue. The dog broke from him, wounded Windham's arm, and tore a servant's leg. At six in the morning, when the Prince was to return, Lord Chesterfield took up a candle to light him, but was so drunk that he fell down the steps into the area, and, it was thought, had fractured his skull. That accident spread the whole history of the debauch, and the King was so shocked that he fell ill on it, and told the Duke of Gloucester that he had not slept for ten nights, and that whenever he fretted, the bile fell on his breast. As he was not ill on any of the disgraces of the war, he showed how little he had taken them to heart. Soon after this adventure, the King being to review a regiment on Blackheath, Lord Chesterfield offered him a breakfast, but the late affair had made such a noise that he did not think it decent to accept it.