Guillaume Apollinaire
Two years after being wounded in World War I, Apollinaire died in the Spanish flu pandemic of 1918; he was 38.
Guillaume Roquille
Jean Guillaume Roquille (26 October 1804 – 1 February 1860) was a French tinsmith and poet who wrote in the Franco-Provençal language. 
Some of his work was burlesque, but much was serious commentary on the wretched conditions of the working people in the industrial regions of the Saint-Étienne basin and Lyon.