“…A generation of researchers faced the challenge of dealing with massive data on 19th century growing urban populations (see, for example, Desama, 1985;Guillaume, 1972;Hershberg, 1976). Later, new approaches emerged focusing more on the dynamics of changes in urban social and demographic structures and behaviors (Bourdelais & Demonet, 1995;Reher, 1990). Those researchers changed scale to analyze urban populations at the level of households (Janssens, 2002;Laflamme, 2007), families (Eggerickx, 2004;Faron, 1997;Pétillon, 2006) or individuals (Alter, 1988;Kertzer & Hogan, 1989).…”