Book excerpt: This book analyzes the family and residential trajectories of men and women across the twentieth century, which are placed in a long-term generational perspective and in the historical context where they played out. It brings together a set of studies based on data from the Biographies et Entourage (Life Event Histories and Entourage) survey conducted by the Institut National d’Etudes Démographiques (INED) on a representative sample of nearly 3,000 residents of the Paris region born between 1930 and 1950. Inside, readers will discover an insightful analysis of the family that moves away from such traditional concepts as the household or main residence and proposes new ones like the entourage and the residential system. This innovative approach to the family network describes an affective and residential proximity that takes into account the relatives and close friends who have played or continue to play a role in an individual's life. The book first presents a detailed analysis of the Biographies et Entourage survey respondents' parental universe and proposes a practical approach to the notion of parenthood that reveals the family and non-family resources available to individuals. Next, it describes the evolution of the respondents' family networks, both in and beyond the household, and details how these family circles shape their subjective judgments during childhood, adolescence, and adult life. Coverage then goes on to examine the family ties of older adults, the role of grandparents and step-families, the importance of family spaces including often frequented places, and inter-generational family solidarity. Families extend well beyond the walls of the home. Interpersonal relations are constructed throughout the life course and in all the settings where they play out. This book takes this new family reality into account and traces its dynamics across time and space. It provides essential tools for researchers looking to conduct life event history surveys and to develop innovative areas of research in the social sciences.