EN
The present paper describes changes that occurred in personal naming practices of Poles during World War II as a result of the German language policy enforced in pre-war Polish territories that was incorporated into the Third Reich. Based on the analysis of the turnover rate of the most frequent first names it is demonstrated that significant changes took place in the areas of pre-war Poland that were joined to the three provinces of the Third Reich - Reichsgau Danzig-West Prussia, the Province of Upper Silesia, and Reichsgau Wartheland. The paper discusses the nature of changes that occurred in particular regions as well as the way they were reversed in 1945.