Patrick Zutshi is a leading authority on the later medieval Western Church and papacy and internationally recognised as an expert in papal diplomatic and the Avignon Curia. This volume brings together essays by over twenty of Patrick's colleagues and friends, all distinguished scholars in medieval history, to celebrate his 70th birthday. The volume reflects both Patrick's wide scholarly interests, ranging from the administration of the papal curia to intellectual and legal history and the mendicant orders, and his extensive network of colleagues and collaborators in different countries, including Germany, Italy, Ireland, Switzerland, Finland, Australia, USA, and UK. This collection of essays also engages with important themes in later medieval history of wide interest to university students, their teachers, and other researchers in the field, comprising: Mendicants and the Religious Life; University and Intellectual History; Bishops and Secular Clergy; and the Papal Curia between Avignon and Rome. All the essays draw on original research, reflecting Patrick's own research and editing of manuscript and archival sources.