Giuseppe Fieschi (jōōzĕp´pā fyā´skē), 1790–1836, French conspirator, b. Corsica. He was a soldier in the Napoleonic army. A radical, he attempted in July, 1835, to assassinate King Louis Philippe. He rigged up an arrangement of several guns that fired together, killing approximately 18 people. He was executed. His attempted assassination resulted in increased repression by the government.