João Luís Fontes is an assistant professor in Medieval history at the Faculty of Social Sciences and Humanities, NOVA University Lisbon, where he completed his PhD about the origins of the eremitic congregation of Serra de Ossa (1366-1510). He is also a researcher at the Institute of Medieval Studies at NOVA University and at the Centre for Religious History Studies at the Catholic University of Portugal. His current research interests are eremitism, lay spirituality, hagiographic literature, courtly and noble culture and piety, social elites, geography and the heritage of religious institutions, liturgy, history of spirituality, and women’s history.

Emma Hornby is a professor of music at the University of Bristol. Her monographs are: Gregorian and Old Roman Eighth-Mode Tracts (2002), Medieval Liturgical Chant and Patristic Exegesis (2009), and co-authored with Rebecca Maloy, Music and Meaning in Old Hispanic Lenten Chants (2013). She has recently co-authored (with Kati Ihnat, Rebecca Maloy and Raquel Rojo Carrillo) Liturgical and musical culture in early medieval Iberia (CUP, in press). She has won multiple grants to support collaborative work on Old Hispanic chant, from the British Academy, the AHRC, the ERC and the Leverhulme Trust.