He soon gained recognition as a learned and successful teacher, and the younger Adalhard, St Anskar the apostle of Sweden, Odo bishop of Beauvais and Warinus abbot of Corvei in Saxony may be mentioned among the more distinguished of his pupils.
There are few great names in the 9th, 10th and 11th centuries: Anselm was a great Churchman, but no great preacher; perhaps the most worthy of mention is Anskar, the missionary to the Scandinavians.
9 But the devoted Anskar (801-865) went forth and sought out the Scandinavian Viking, and handed on the torch of self-denying zeal to others, who saw, after the lapse of many years, the close of the monotonous tale of burning churches and pillaged monasteries, and taught the fierce Northman to learn respect for civilized institutions.
What Ulfilas was to the Gothic tribes, what Columba and his disciples were to the early Celtic missions, what Augustine or Aidan was to the British Isles, what Boniface was to the churches of Germany and Anskar to those of Denmark and Sweden, that, on the discovery of a new world of missionary enterprise, was Xavier to India, Hans Egede to Greenland, Eliot to the Red Indians, Martyn to the church of Cawnpore, Marsden to the Maoris, Carey, Heber, Wilson, Duff and Edwin Lewis to India, Morrison, Gilmour, Legge, Hill, Griffith John to China, Gray, Livingstone, Mackenzie, Moffat, Hannington, Mackay to Africa, Broughton to Australia, Patteson to Melanesia, Crowther to the Niger Territory, Chalmers to New Guinea, Brown to Fiji.
In 827 he was expelled from his kingdom, but St Anskar, who had been sent with Herioldus to preach Christianity, remained at his post.