What is the book about?
The Roman Martyrology, usually known as the Latin: Martyrology Roman, is the official martyrology of the Catholic Church.The Roman Martyrology, usually known as the Latin: Martyrology Roman, is the official martyrology of the Catholic Church.In 1582, Pope Gregory XIII decreed a revision of the Julian calendar, creating a new system, now called, after him, the Gregorian calendar. The Roman Martyrology was first published in 1583. A second edition was published in the same year. The third edition, in 1584, was made obligatory wherever the Roman Rite was in use.