Whilst, however, the Continental Churches aimed at uniformity after a troublesome experience of their own errors, the Irish and British Churches, practically isolated from their neighbours, tenaciously clung to the system introduced by St. Patrick. It was the system of their sainted fathers, and that was enough for them. So when Augustine and his companions, having partially converted the Saxons, came into contact with the Christians of the north of England, they were much scandalized at their celebrating Easter at a different time from the rest of the world. They remonstrated, but in vain; the Scots of England and Ireland would not change their ways; some of them would not even eat with the newcomers; the Britons of Wales refused to aid them in converting the Saxons. Colman, after his discussion with Wilfred at Whitby, refuted but not convinced, left England with his monks and sailed away to a lonely island in his native Mayo, rather than give up his Irish tonsure and his Irish Easter. Columbanus was equally obdurate in France, and the Abbots of Hy for a hundred years more tenaciously adhered to the traditions of their own great founder. But all Ireland was not equally stubborn, and the Southerns yielded first. The English Prelates, Laurence of Canterbury, Millitus of London, and Justus of Rochester, shortly after the death of Augustine, addressed a letter to "their most dear brothers the Lords, Bishops, and Abbots throughout all Ireland (Scotia)," admonishing them to give up their "errors" in reference to Easter, and celebrate it in conformity with the Universal Church. But the Irishmen appear to have taken no notice of this document, for it looked like an attempt to assert a spiritual supremacy over the "Scots" which they always vigorously repudiated. Millitus afterwards went to Rome, and others, too, going there after him spoke of the errors and contumacy of the Scots in this matter of Easter as well as in some other things also. So Pope Honorius, about the year A.D. 629, addressed an admonition to the pastors of the Irish Church, sharply rebuking them for their pertinacity in their erroneous practices, especially in reference to Easter, and calling upon them to act thenceforward in conformity with the Universal Church.