Thomas M. Izbicki, Ph.D. (Cornell University, 1973), is a humanities librarian emeritus at Rutgers University. He is a researcher in the fields of medieval canon law, the history of the papacy, and the history of the Order of Preachers. He has published Protector of the Faith: Cardinal Johannes de Turrecremata and the Defense of the Institutional Church (1981) and The Eucharist in Medieval Canon Law (2015).Jorge Ledo, Ph.D. (University of Aberdeen, 2009), is a ‘Ramón y Cajal’ Researcher at the Universidade da Coruña (Spain). He is an intellectual historian specialized in Renaissance Humanism and in the history of religious minorities and religious dissidence in early-modern Spain. He has published Moria de Erasmo Roterodamo. A Critical Edition of the Early Modern Spanish Translation of Erasmus's Encomium Moriae (2014).