The canonization process was much more relaxed in the decades following Cyril's death than today. Cyril was regarded by his disciples as a saint soon after his death. His following spread among the nations he evangelized and subsequently to the wider Christian Church, and he was famous as a holy man, along with his brother Methodius. There were calls for Cyril's canonization from the crowds lining the Roman streets during his funeral procession. The brothers' first appearance in a papal document is in "Grande Munus" of Leo XIII in 1880. They are known as the "Apostles of the Slavs", and are still highly regarded by both Roman Catholic and Orthodox Christians. Their feast day is currently celebrated on 14 February in the Roman Catholic Church (to coincide with the date of St Cyril's death); on 11 May in the Eastern Orthodox Church (though for Eastern Orthodox Churches which use the Julian Calendar this is 24 May according to the Gregorian calendar); and on 7 July according to the old sanctoral calendar that existed before the revisions of the Second Vatican Council. The celebration also commemorates the introduction of literacy and the preaching of the gospels in the Slavonic language by the brothers. The brothers were declared "Patrons of Europe" in 1980.