During the pontificate of _Adalrag_, the successor of Unnus, Christianity made greater progress in Denmark than it had ever yet made. This ecclesiastic was a canon of Hildesheim; he was subsequently, we are told, the chancellor of two, or even of three, Othos. But this is incorrect. He was never at any time arch-chancellor, and was vice-chancellor only during a short period of the first Otho’s reign. Probably he was secretary to one or more of those emperors; he was certainly high in their favour. Through his influence, three bishoprics were established in Jutland,—Sleswic, Rypen, and Aarhus, and one in Holstein, that of Altenburg,—all subject to the metropolis of Hamburg. This result, as we have before related[129], must be attributed to the victories of Otho I., who subdued the whole of Holstein and Jutland. Harald would have had no peace had he not consented to reign as Otho’s vassal for the southern part at least of Jutland; to pay an annual tribute; to sanction the creation of these bishoprics; to embrace Christianity with the whole of his family; and to aid in its diffusion throughout his dominions. If, on this occasion, he was an unwilling convert, subsequently he became a sincere believer in its doctrines, which he openly and constantly professed. At the time he transferred his government from Ledra, the ancient seat of the Odinic superstition, to Roskild, he erected in the latter place a church to the most Holy Trinity. It was attachment to Christianity, even more than ambition, in his son, that led to his tragical death. The old pagan party were resolved to have a king of their own creed: hence the accession of Sweyn. Though Sweyn was an enemy of the new faith, he could not undo the work of his father, and of the Christian missionaries: the converts were too numerous to be exterminated. In a few years he himself became conqueror of England, and found it convenient to embrace the Christian faith, which from his death was the dominant faith of Denmark. Nor did the archbishop, Adalrag, lose sight of Sweden, which his predecessor had done so much to reclaim. At his instance, Liafdag, bishop of Rypen, and a Dane, Odincar the elder, laboured in the kingdom, and probably in some parts of Norway. Hako the Good was at this time the ruler of the latter kingdom, and he naturally wished to confer on his subjects the blessings which he had received. [Sidenote: 988 to 1026.]