Posted: Sat Jan 05, 2008 3:09 pm
http://en.wikipedia.org/wiki/All_Saints'_Day
The origin of the festival of All Saints as celebrated in the West dates to May 13 in 609 or 610 (the day being more important than the year), when Pope Boniface IV consecrated the Pantheon at Rome to the Blessed Virgin and all the martyrs; the feast of the dedicatio Sanctae Mariae ad Martyres has been celebrated at Rome ever since. The chosen day, May 13, was a pagan observation of great antiquity, the culmination of three days of the Feast of the Lemures, in which were propitiated the malevolent and restless spirits of all the dead. The medieval liturgiologists based the idea that this Lemuria festival was the origin of that of All Saints on their identical dates and on the similar theme of all the dead. The feast of All Saints, on its current date, is traced to the foundation by Pope Gregory III (731-741) of an oratory in St Peter's for the relics "of the holy apostles and of all saints, martyrs and confessors, of all the just made perfect who are at rest throughout the world", with the day moved to November 1.[5] This usually fell within a few weeks of the Celtic pagan holiday of Samhain, which had a theme similar to that of Lemuria, but which was also a harvest festival.
The Irish, whose holiday Samhain had been, did not maintain this November 1 date for All Hallows Day, as extant historical documents attest that the celebration of All Hallows in Ireland took place in the spring: "...the Felire of Oengus and the Martyrology of Tallaght prove that the early medieval churches [in Ireland] celebrated the feast of All Saints upon 20 April."[6] A November festival of all the saints was already widely celebrated on November 1 in the days of Charlemagne. It was made a day of obligation throughout the Frankish empire in 835, by a decree of Louis the Pious, issued "at the instance of Pope Gregory IV and with the assent of all the bishops," which confirmed its celebration on the 1st of November. The octave was added by Pope Sixtus IV (1471-1484).[3]