Dr Charles Quin (1756-1818) was the son of the eminent Irish physician Dr Henry Quin M.D. (1718-1791). Charles was President of the Royal College of Physicians, Dublin in 1789 and published A Treatise on the Dropsey of the Brain.
The Hon. Charles Monck (1791-1849) succeeded his brother as Viscount Monck, a title created for their father in 1801. He was a barrister and fought in the Penisular War serving as a lieutenant in the 43rd Light Infantry.