from the official website: http://www.cowdray.co.uk/historic-cowdray/
"1793 – Cowdray semi-destroyed by fire (September 24). 8th Viscount drowned on the Rhine in Switzerland (early October). Title passes to descendant of 2nd Viscount who dies childless. Viscountancy becomes extinct."
Cowdray House, Midhurst, Sussex, has a long and detailed history.
It seems to me that 1793 was a particularly bad year in that history.
