Cyril Grange is Senior Researcher at the National Center for Scientific Research (CNRS). He works mainly on social and economic history issues involving the Jewish upper class in Paris (19th-20th centuries). This theme has led him to take an interest in the anthropology of kinship and to participate closely in the development of the “Program for the Use and Computation of Kinship Data” (Puck) (www.kintip.org, www.kinsources.org). In 2016, he published Une élite parisienne: les familles de la grande bourgeoisie juive (1870-1939) (Paris, CNRS Editions). He is currently studying the mechanisms of dispossession and plundering of the various forms of wealth (real estate, movable property, cultural assets) of the Parisian Jewish elite during the Second World War.