Guillaume Apollinaire
Two years after being wounded in World War I, Apollinaire died in the Spanish flu pandemic of 1918; he was 38.
William Baillie (artist)
In a letter of 1795 he told his fellow-artist Ozias Humphry that he had wasted a lot of time painting landscapes, adding that "it is a pleasing pursuit, but not a pot-boiling one." He died in Calcutta in 1799 at the age of 46.