The lives of William Cavendish, first duke of Newcastle, and his family including, centrally, his second wife, Margaret Cavendish, are intimately bound up with the overarching story of seventeenth-century England: the violently negotiated changes in structures of power that constituted the Civil Wars, and the ensuing Commonwealth and Restoration of the monarchy. William Cavendish, 1st Duke of Newcastle, and his Political, Social and Cultural Connections: Authority, Authorship and Aristocratic Identity in Seventeenth Century England brings together a series of interrelated essays that present William Cavendish, his family, household and connections as an aristocratic, royalist case study, relating the intellectual and political underpinnings and implications of their beliefs, actions and writings to wider cultural currents in England and mainland Europe.