The noblest passion of Irish monastic Christianity was to _peregrinare_ for the sake of Christ, and spread the Faith among the heathen; the most interesting episodes of its history are the wanderings and missionary labours and foundations of its leaders. The careers of Columba and Columbanus afford grandiose examples. Something has been said of the former. The monastery which he founded on the Island of Iona was the Faith’s fountainhead for Scotland and the Saxon north of England in the sixth and seventh centuries. About the time of Columba’s birth, men from Dalriada on the north coast of Ireland crossed the water to found another Dalriada in the present Argyleshire, and transfer the name of Scotia (Ireland) to Scotland. When Columba landed at Iona, these settlers were hard pressed by the heathen Picts under King Brude or Bridius. Accompanied by two Pictish Christians, he penetrated to Brude’s dwelling, near the modern Inverness, converted that monarch in 565, and averted the overthrow of Dalriada. For the next thirty years Columba and his monks did not cease from their labours; numbers of monasteries were founded, daughters of Iona; and great parts of Scotland became Christian at least in name. The supreme authority was the Abbot of Iona with his council of monks; “bishops” performed their functions under him. Early in the seventh century, St. Aidan was ordained bishop in Iona and sent to convert the Anglo-Saxons of Northumberland. The story of the Irish Church in the north is one of effective mission work, but unsuccessful organization, wherein it was inferior to the Roman Church. Its representatives suffered defeat at the Synod of Whitby in 664. Fifty years afterward Iona gave up its separate usages and accepted the Roman Easter.[202] The missionary labours of the Irish were not confined to Great Britain, but extended far and wide through the west of Europe. In the sixth and seventh centuries, Irish monasteries were founded in Austrasia and Burgundy, Italy, Switzerland, Bavaria; they were established among Frisians, Saxons, Alemanni. And as centres of Latin education as well as Christianity, the names of Bobbio and St. Gall will occur to every one. Of these, the first directly and the second through a disciple were due to Columbanus. With him we enter the larger avenues of Irish missions to the heathen, the semi-heathen, and the lax, and upon the question of their efficacy in the preservation of Latin education throughout the rent and driven fragments of the western Roman Empire. The story of Columban’s life is illuminating and amusing.[203]