Alex Metcalfe is Senior Lecturer in History at Lancaster University. His works on the medieval Mediterranean include The Society of Norman Italy (2002), Muslims and Christians in Norman Sicily (2003), I Musulmani dell'Italia medievale (2019) and The Making of Medieval Sardinia (2021). Hervin Fernández-Aceves , teaches and researches medieval and social history at El Colegio de Jalisco and at Universidad Panamericana, Guadalajara. His publications include County and Nobility in Norman Italy (2020) and The Making of Medieval Sardinia (2021). Maurizio Virdis is Emeritus Professor of Romance Philology and Sardinian Linguistics at the University of Cagliari. His publications include Gloser la lettre. Marie de France, Renaut de Beaujeu, Jean Renart (2001), Gerolamo Araolla: Rimas diversas spirituales (2006) and La Sardegna e la sua lingua. Studi e saggi (2018).