This collection of essays demonstrates in vivid detail how a range of formal and informal networks shaped the Irish experience of emigration, settlement and the construction of ethnic identity in a variety of geographical contexts since 1750. It examines topics as diverse as the associational culture of the Orange Order in the nineteenth century to the role of transatlantic political networks in developing and maintaining a sense of diaspora, all within the overarching theme of the role of networks. This volume represents a pioneering study that contributes to wider debates in the history of global migration, the first of its kind for any ethnic group, with conclusions of relevance far beyond the history of Irish migration and settlement. It is also expected that the volume will have resonance for scholars working in parallel fields, not least those studying different ethnic groups, and the editors contextualise the volume with this in mind in their introductory essay. This book was previously published as a special issue of Immigrants and Minorities.