イリノイ郡
Philippe de Rocheblave served in the French Army. Rocheblave led French troops in New France, during the Seven Years' War also, known as, the French and Indian War in North America, serving as a lieutenant at Fort de Chartres in the Illinois Country. He later established a business at Kaskaskia. After the British took control of Kaskaskia, he became the commandant of Fort Sainte-Geneviève, in the Illinois Country for New Spain. In 1774, Rocheblave took command of Kaskaskia, for the British.