The Slavic Letters of St. Jerome is the first book-length study of the medieval legend that Church Father and biblical translator St. Jerome was a Slav who invented the Slavic (Glagolitic) alphabet and Roman Slavonic rite. Julia Verkholantsev locates the roots of this belief among the Latin clergy in Dalmatia in the 13th century and describes in fascinating detail how Slavic leaders subsequently appropriated it to further their own political agendas. The Slavic language, written in Jerome's alphabet and endorsed by his authority, gained the unique privilege in the Western Church of being the only language other than Latin, Greek, and Hebrew acceptable for use in the liturgy. Such privilege, confirmed repeatedly by the popes, resulted in the creation of narratives about the distinguished historical mission of the Slavs and became a possible means for bridging the divide between the Orthodox and Catholic Churches in the Slavic-speaking lands. In the fourteenth century the legend spread from Dalmatia to Bohemia and Poland, where Glagolitic monasteries were established to honor the Apostle of the Slavs Jerome and the rite and letters he created. The myth of Jerome's apostolate among the Slavs gained many supporters among the learned and spread far and wide, reaching Italy, Spain, Switzerland, and England. Grounded in extensive archival research, Verkholantsev examines the sources and trajectory of the legend of Jerome's Slavic fellowship within a wider context of European historical and theological thought. This unique volume will appeal to medievalists, Slavicists, scholars of religion, those interested in saints' cults, and specialists of philology.