Book excerpt: A thriving port, a frontier base for the lords of Gower and a multi-cultural urban community, the south Wales town of Swansea was an important centre in the Middle Ages, at a nexus of multiple identities, cultural practices and configurations of power. As the principal town of the Marcher lordship of Gower and seat of the Marcher lord's rule, Swansea was a site of contested authority, colonial control and complex interactions – and collisions – between different cultures, languages and traditions. Swansea also features in the miracle collection prepared for the canonisation of Thomas Cantilupe, Bishop of Hereford (d. 1282), as the setting for the intriguing case of the hanging and strange revival of the Welsh rebel, William Cragh. Taking medieval Swansea and Wales as its starting point, this volume brings into focus questions of place, power, identity and belief, bringing together inter-disciplinary perspectives which span History, Literary Studies and Geography / Archaeology, and engaging with current debates in the fields of medieval frontier studies, urban history, manuscript studies and hagiography. This book was originally published as a special issue of the Journal of Medieval History.