The Radboud Group for Historical Demography and Family History is based at Radboud University. It is the leading centre of expertise on Historical Demography and Family History in the Netherlands. The Radboud Group combines a multidisciplinary approach and sound quantitative methods with a thorough foundation in history. This implies that the demographic phenomena and processes the group studies are always situated within shifting environments and socio-economic conditions, historical family systems and religious norms. As historians, the group emphasizes the need for a proper understanding of the historical sources underlying demographic analysis; the administrative practices, the classifications and the discourses surrounding counting and measuring.