Chapter 1 explores the modern values that have animated kinship studies since their emergence in the nineteenth century. It examines the sudden invention of kinship by Johann Bachofen, Henry Maine, John Ferguson McLennan, Numa Denis Fustel de Coulanges, and Lewis Henry Morgan in the 1860s, and the internal and external developments in the West that prompted their discoveries: revolutionary agitation, the engagement with “primitives” around the globe, industrialization and the disintegration of old solidarities, and intellectual revolutions in the study of prehistory, especially Indo-European studies and Darwinian evolution. Social theorists transformed kinship into an elemental form of human sociality and evolutionary development, and a building block of the emerging liberal order as the West coped with the ontological sea change wrought by the desacralization and industrialization of society.