While not completely neglected as a late-antique epistolographer, Gelasius has mainly been considered as a theologian prominent in the Acacian schism and as a forerunner of the mediaeval papacy. This imbalance will be redressed by considering his letters on various problems of his time, such as displaced persons, persecution, ransoming captives, papal property management, social and clerical abuses involving servants, orphans, slaves and slave-owners,...