Joseph Déchelette (*8 January 1862, Roanne) was born into a wealthy family of industrialists and after studies at Saint-Chamond, close to Saint-Étienne, under guidance of the order of La Société de Marie (SM) (Marists), began his working life as a salesman in the family business. However, the passion of archeology, to which he had been initiated as a teenager by his uncle, quickly took over though he continued to work for the family business until 1899. In 1884, he joined Diana, archaeological and historical society located in Montbrison (Loire), which aims to identify and study the antiquities and monuments of the Forez region, south of Roanne. He became inspector on behalf of the French Archaeological Society. From 1892 until his death he was curator of the Museum of Fine Arts and Archaeology of Roanne. In 1899, Joseph Déchelette finally abandoned working for his father's company to focus exclusively on prehistoric archeology. Freed from professional constraints, he started writing books between 1908 and 1914 publishing all volumes of the Handbook of prehistoric archeology, Celtic and Gallo-romaine. In 1914, after the outbreak of the Great War, he asked, despite his advanced age, an assignment at the front to fill the gaps left by the battle of the Marne. Captain in the 298th Infantry Regiment, he is killed two months after the war began on October 3, 1914 – aged only 52. His name is inscribed in Paris’ Pantheon, among the 560 writers died for France. His memory and his works are kept in the Museum.