The main charge brought against the Irish, so far as we can gather from Bede and Cummian, was that they celebrated Easter from the 14th to the 20th day of the moon, thus celebrating it on the same day with the Jews, viz., the 14th, _if that should happen to be Sunday_, which was contrary to the express prohibition of the Council of Nice. Most certainly they did not celebrate it with the heretical Quartodecimans on the 14th day of the moon, no matter what day of the week it might happen to be--they never celebrated Easter on any day but a Sunday, as both Bede and Cummian expressly admit. Cummian says that St. Patrick assigned the equinox to the 21st of March, but their cycle was the older Roman cycle of eighty-four years, not the new and more correct cycle of nineteen years adopted first at Alexandria and afterwards at Rome. The main charge, however, was opposition to the Universal Church in celebrating Easter from the 14th to the 20th of the moon, because the 14th of Nisan being the Jewish festival was, by the Council of Nice, declared unlawful for the Christian festival. How, then, could St. Patrick have come to admit the 14th of the moon in any circumstances as a lawful date for Easter Day? This is a difficult point not yet clearly determined. We rather think that this usage of celebrating Easter on the 14th of Nisan, if it fell on Sunday, was retained in several of the Gallican Churches even after the Council of Nice. The Council itself expressly tells us that it was retained up to its own time in the Eastern Churches. Now, Eastern influence and Eastern customs prevailed to a considerable extent in Southern Gaul during the fifth century. The great monastery of Lerins was founded about A.D. 410, and from its cloisters issued the greatest prelates of Southern France. John Cassian came from the East, and, as we know, was imbued with Eastern ideas--Cassian, the greatest man of his time, so holy, so learned, and so amiable, was a monk of Lerins, and in A.D. 415 founded the great monastery of St. Victor, where Eastern ideas were also prevalent. It is not unlikely that St. Patrick derived his Paschal computation from these monasteries, or from some of the great scholars who issued from their cloisters.