(b London, 25 Apr. 1758; d London, 23 Jan. 1810). British portrait painter, born of German immigrant parents who worked at the court of George II. He trained as a chorister in the Chapel Royal, St James's Palace, and later received an allowance from George III to study at the Royal Academy Schools. The royal favour he was shown led to rumours that he was the king's illegitimate son. In 1789 he was appointed portrait painter to the Prince of Wales (later George IV) and after the death of Reynolds, he and Lawrence were the leading portraitists in the country.
Text source: The Oxford Dictionary of Art and Artists (Oxford University Press)