Walker Horsfall is from Toronto, Canada, and received his PhD from the Centre for Medieval Studies at the University of Toronto.

His research, broadly conceived, is on the intersection between medieval literature and natural philosophy. His main focus is on Middle High German religious and love poetry from the twelfth to the fourteenth centuries, with additional attention to Arthurian courtly romances and mystical texts. His work examines what these medieval texts can contribute to our understanding of the histories of gender, sexuality, religion, and science. Currently, he is investigating the existence of "communities of pleasure" in the High Medieval period, as well as the use of rhetorical and narratological strategies in medieval German and Scandinavian texts as a way of encoding contemporary scientific information, particularly astronomical information.