Charles O'Brien, 9th Earl of Thomond
Appearance
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/18/Officer_Clare_Regiment_Musee_Armee_Inv04379.jpg/220px-Officer_Clare_Regiment_Musee_Armee_Inv04379.jpg)
Charles O'Brien, titular Earl of Thomond and Viscount Clare (1757-1774) was a Franco-Irish nobleman.
He was born on 18 October 1757 in Paris, France, the son of the maréchal de Thomond and Marie Genevieve Louise Gauthier de Chifreville. He was Colonel-proprietor of the Clare Regiment after his father, but died before assuming effective command. O'Brien died unmarried at 17 of natural causes on 29 December 1774 in Paris,