The beginning of the conversion attempts weren't taken seriously at all by the Norse. Missionary monks would come into Norse areas trying to convert them and simply would be ignored.
The conversion attempts began somewhere between 710 AD and 718 AD, when a Anglo-Saxon monk named Willibrord had made unsuccessful attempts to convert the Danes during the reign of King Ongendus (King Angantyr). Nevertheless of his efforts, the Christian faith was simply not appealing to the Norse.
In 725 AD, Willibrord made another attempt and led a mission to Denmark, even though he was well received by the king, his mission had little effect on the general populace.
This did not stop the missionary monks ...view middle of the document...
These were the events that influenced the Norse in Scandinavia to finally cease all hostilities against each other and focus their attention on a mutual hatred and thus began to wage war and attacks on Christianity. This was part of what started what we know as the Viking Age, as anything Christian was considered by Norsemen as a legitimate and justified target to raid.
Prior to this event in 772 AD, the kings of Norway were at war and allied against the Danes with Charlemagne. However, when the Frankish King had the Irminsûl cut down and the Saxon Nobles assassinated, the various kings of Norway switched sides, uniting with their Norse brethren (the Danes) and went to war against Charlemagne.
This effectively put a damper on any attempts by missionaries on their efforts to convert the Norse to Christianity.
It was later, after Charlemagne, in the 820's AD and onwards that the missionary Ansgar and his followers, with the support of the now Frankish King, Louis the Pious were able to establish missions in both Denmark and Sweden. Even though the missions were made with the support local Norse rulers, once again the missionaries had made little to no influence on the population as a whole.
It was in 826 AD, that Harald Klak, the King of Jutland, was forced to flee Denmark by the Danish King Horik I. King Harald was forced to go to King Louis I of Germany and seek his help in getting back his lands in Jutland. King Louis I offered to make Harald Duke of Frisia if he would give up the old Norse gods and convert to Christianity. Harald agreed to this proposal and his family, along with the 400 Danes that were with him and they were all then baptized as Christians.
When Harald returned to Jutland, the missionary monk Ansgar was assigned to accompany him and oversee Christian adherence among the new Norse converts. It was when King Horik I again forced Harald Klak from Denmark that the monk Ansgar left Denmark and focused his efforts in Sweden instead. In 829 AD, Ansgar established a small Christian community in Birka, on the island of Björkö in Sweden. By 831 AD, the Archdiocese of Hamburg was founded and assigned the proselytizing responsibility for converting the Scandinavians from their traditional Nordic beliefs to Christianity.
Regardless of the mass conversions spreading through Scandinavia, Sweden did face a pagan reaction in the mid-11th century and Christianity did not became firmly established until in the 12th century. The greater increasing numbers of converts was because from the 11th to the 14th century, Christian society in Europe became less tolerant of other religions and beliefs. This was the time period when the Christian...