Katherine Lynch discusses the role of the family in society from the late Middle Ages to the industrial period. She argues that in western Europe an ongoing, and recognizably western pattern of relationships among individuals, their families, and communities emerged in the late medieval period. Tracing the pattern through the nineteenth century, this study explores the family's function as an organization on the boundary between public and private life, rather than as part of a "private sphere", and how this phenomenon has been influenced by political, religious and demographic factors.