This was Corpus Christi Day, a feast founded by Pope Urban IV
In 1264, Pope Urban IV
instituted the feast in the Papal Bull Transiturus de Hoc Mundo, which stated that one main purpose of the feast is to focus solely on the Holy Eucharist, since the Thursday observance of the institution of the Holy Eucharist is celebrated with other mysteries of our faith including the Washing of the Feet, the Institution of the Priesthood as well as the Agony in the Garden.
In 1263, Pope Urban IV
established the Feast of Corpus Christi to commemorate the Mass of Bolsena, when bloodstains appeared on the communion host and stained the sacramental linen.
This claim is based on the acta of the counts of Champagne and a document of Pope Urban IV
. This essay concludes that, given the present evidence, de Libera's case rests on more historically sound data, but that to arrive at this conclusion one must impeach the Dominican sources (not done by de Libera) and take into consideration additional data from the research of Michele Mulchahey on the introduction of logic into the Dominican curriculum.
Certain information about William of Tripoli comes from three bulls issued by Pope Urban IV from Orvieto in 1264.
Pope Urban IV ordered that poor Saracens in Acre and needy converts in Bethlehem be given sustenance.
The other electors held their own meeting and voted for Alfonso, King of Castile, and Pope Urban IV
began to waver.
After meeting with the bishop, cardinal, and Pope Urban IV
, she convinced the bishop to call a synod in 1246 to order that the celebration be held the following year.
News reached Rome quickly and the Pontiff, Pope Urban IV
, who was in Orvieto at the time, set out for Bolsena.
The feast of Corpus Christi was introduced in 1264 by Pope Urban IV
Third, by noting the roles of Juliana of Mont Cornillon, Jacques Panaleon, the archdeacon of Liege who later became Pope Urban IV
, and Thomas Aquinas in establishing and forming this feast, it suggests the significance of the individual person in liturgical development.