To speak of the Holy Eucharist, a course of lectures, instead of a sentence in one lecture, might afford space not wholly inadequate. Augustine wrote to Gregory to ask what he was to do, as he found the custom of Masses[53] in the Church of the Gauls (Galliarum) different from the Roman. Gregory replied that whatever seemed to Augustine the most suitable, whether in the Roman use or in that of the Gauls, or in the use of any other Church, that he should adopt; and having thus made a collection of all that seemed best, he should form it into one whole, and establish that among the English. Gregory actually himself added words to the Roman Canon of the Mass, so free did he feel himself to deal with such points. Augustine went so far in this direction of recognising other liturgies, that he told the Britons if they would agree with him about Easter and Baptism, and help him to convert the English, he on his part would tolerate all their other customs, though contrary to his own. Gildas, thirty years before, stated directly that the Britons were contrary to the whole world, and hostile to the Roman custom, both in the Mass and in the tonsure. A very early Irish statement, usually accepted as historical, shews that the British custom of the Mass was different from that which the Irish had from St. Patrick: that this British custom was introduced into Ireland by Bishop David, Gildas, and Docus, the Britons, say about 560; and that from that time till 666 there were different Masses used in Ireland. The South of Ireland accepted the Roman Easter in 634, and the North in 692; so this date 666 is not unlikely. But it was centuries before the old national rites really died out in Ireland. Malachy, the great Romaniser, Bishop of Armagh 1134-1148, was the first Irish bishop to wear the Roman pallium. He established in all his churches the customs of the Roman Church. It may be as well to state approximately the dates at which differences of practice disappeared in the several parts of our own island. The English of Northumbria abandoned the insular Easter in 664. The Britons of Strathclyde conformed to the English usages in 688; the first British bishop to conform in that district was present at a Council at Rome in 721, where he signs himself "Sedulius, a bishop of Britain, by race a Scot." Pictish Scotland, and also Iona, adopted the Catholic rites between 710 and 717. The Britons of North Wales did not conform to the usages adopted by the Anglo-Saxon Church till 768; those of South Wales till 777.