Ok, so the scenario is that Wessex falls to one or more Viking conquerers some time during the 800s and the new lords of Wessex keep their old religion, at least for some time. What would be the consequences of this? How would it influence the situation in other parts of Europe, like Scandinavia and France? OTL the central power in West Francia weakened during the 800s. Would this still be the case in this scenario and if so, would a Pagan conquest of Wessex weaken Christianity in Western Europe in general? If West Francia was still weak, it would not be in a position to start a crusade. On the other hand, if Vikings conquered Wessex, one reason might be that many of those that OTL went to France in this timeline went to Britain instead, something which would be beneficial to France. England was important in the spread of Christianity to Scandinavia (at least to Norway, I am not sure about Sweden/Denmark), so Scandinavia might perhaps stay Pagan longer.
Any thoughts?