Saint Callistus (222) Oct 14, 2000 The Slaves of the Immaculate Heart of Mary He was the seventeenth Pope and reigned for five years. He built a beautiful church to Our Lady called “Holy Mary beyond the Tiber.” He was martyred for the Faith. Pope Saint Calistus instituting the Ember Day fasts, Paris, XIV century (source) Share this:TweetWhatsAppShare on TumblrTelegramPocketLike this:Like Loading... Related