He's Much to Blame is a 1798 comedy play by the British writer Thomas Holcroft.Nicoll p.271
The original Covent Garden cast included William Thomas Lewis as Sir George Versatile, John Quick as Lord Vibrate, Alexander Pope as Mr Delaval, Charles Murray as Doctor Gosterman, James Thompson as Master of the Hotel, Jane Pope as Maria, Julia Betterton as Lady Jane and Isabella Mattocks as Lady Vibrate.Hogan p.2044
References
Bibliography Nicoll, Allardyce. A History of English Drama 1660–1900: Volume III. Cambridge University Press, 2009. Hogan, C.B (ed.) The London Stage, 1660–1800: Volume V. Southern Illinois University Press, 1968.