Jacques François Mouret
Mouret was an alcoholic. In 1842 the editor of the chess magazine Le Palamède, said  "He was a clever fellow, sharp, gay, lively, amusing, and had studied seriously the theory of chess, by which he made his living. His talent redeemed a little the rudeness of his manner and a certain licentiousness which he indulged in. He used to be in a continual state of semi-intoxication". George Walker  wrote that "His brain was consumed in the Brandy".