The thirteenth century brought the British Isles into ever closer contact with one another, and with medieval Europe as a whole. This international dimension forms a dominant theme of this collection: it features essays on England's relations with the papal court; the adoption of European cultural norms in Scotland; Welsh society and crusading; English landholding in Ireland; and dealings between the kings of England and Navarre. Other papers, on ritual crucifixion, concepts of office and ethcis, and the English royal itinerary, show that the thirteenth century was also a period of profound political and cultural change, witnessing the transformation of legal and economic structures.