Alberto Ferreiro, Ph.D., is a Professor of European History at Seattle Pacific University. He has published over 115 articles in patristics and medieval studies in prestigious journals such as Church History, Journal of Ecclesiastical History, Harvard Theological Review, Vigiliae Christianae, Studia monastica, Hagiographica, and Zeitschrift für Antikes und Christentum. Among his 12 books are: Simon Magus in Patristic, Medieval and Early Modern Traditions (Brill, 2005) and The Visigoths in Gaul and Iberia (Update): A Supplemental Bibliography, 2013-2015 (Brill, 2016).