In the Christian world, historical records associate the origins of All Souls´ with the first known observance of this day in the Benedictine monastery of Cluny under Abbot Odillo in 998, though the tradition may be older. The Christian rites on this day are devoted particularly to the deceased whose souls are not yet ready to pass into the other world and are undergoing a process of purification. From the 11th to the 13th century, the observance of All Souls´ gradually expanded into other countries. Since the 14th century, the day has been observed in Rome, the centre of Christianity. Since 1915, the year when thousands of World War I victims were mourned, priests celebrate three masses on this day. In some Czech and Moravian villages, special pastries called dušičky were baked on All Souls´ Day and offered to the local poor, beggars or passers-by.