John of Rupescissa’s engagement with prophetic texts in the Sexdequiloquium

In 1356, John of Rupescissa produced two important works that each offered an exposition of the future of the papacy. One, the Liber ostensor quod adesse festinant tempora, is a long treatise, offering detailed exegesis of dozens of medieval prophetic texts; the other, the Vade mecum in tribulatione, is a brief summary of his prophetic view, which would become the most influential and widely-circulated of the author’s writings. Both works discuss the coming of a future Franciscan pope, whom R...