After his father's death, she remarried Thomas Adderley, and died in childbirth in 1743 at the age of 40, after the birth of her daughter Elizabeth, who later married Major David Ross.

[citation needed] Lord Charlemont was well known for his love of Classical art and culture and spent nine years on the Grand Tour in Italy, Greece, Turkey and Egypt.

When Charlemont did not provide the funds, Piranesi scratched his name from the dedication print inspired by the Roman practice of damnatio memoriae.

For various early services in Ireland, he was made an earl in 1763, but he disregarded court favours and cordially joined Grattan in 1780 in the assertion of Irish independence.

[4] The somewhat inaccurate Memoirs of the Political and Private Life of James Caulfield, Earl of Charlemont, Knight of St. Patrick, by Francis Hardy, appeared in 1810.