Here are two sites which you can visit in order to get a feel for some locations where DeGruy ancestors lived: Fort De Chartres and Kaskaskia..... Books written on both.... Our Antoine Valentine DeGruÿsverloin Lord Dumenil Fouchard, Ecuyer de la Foilie, Duc of Parma [Parme] appears in one such article..... He was stationed at Fort De Chartres and lived nearby with Marie Therese Aufrere. Below the web site links is part of a note that I have about Antoine http://state.il.us/hpa/hs/Kaskaskia.htm and http://www.state.il.us/hpa/hs/DeChartres.htm <http://www.state.il.us/hpa/hs/DeChartres.htm> Enjoy! Renée His death occurred about that time, between July and September 1759, according to local historian and genealogist Sidney Louis Villere. On March 13, 1748, he purchased, along with his mother-in-law, Maturine Guilmot, a windmill at Fort Chartres. [Illinois] He resided there at the time. The transaction said: Lieutenant des troupes de la marine, Lord Dumenil - Fouchard, Ecuyer, de la Folie, Officer of a company of infantry detached from the marine garrisoned in Illinois, residing in this town of Kaskaskia". On March 8, 1751, upon the birth record of his son Jean Baptiste, he was listed as an "Officer of the naval troops in this colony, a native of Paris". On October 15, 1752, he was a lieutenant.