Cause of death: heart attack
Marie-Henri Beyle (French: [maʁi ɑ̃ʁi bɛl]; 23 January 1783 – 23 March 1842), better known by his pen name Stendhal (UK: , US: , French: [stɛ̃dal, stɑ̃dal]), was a French writer. Best known for the novels Le Rouge et le Noir (The Red and the Black, 1830) and La Chartreuse de Parme (The Charterhouse of Parma, 1839), he is highly regarded for the acute analysis of his characters' psychology and considered one of the early and foremost practitioners of realism. A self-proclaimed egotist, he coined the same characteristic in his characters' "Beylism".
Source : Wikipedia