OTL it did!
So You don't count the Royal Danish period of the Viking age as part of said age.
scarcity of sources on the Viking side.
Source problem really. We don't know enough about the great heathen army to know precisely how close they came.
I doubt a unified Danish kingdom in the heptarchy is that possible.
Wessex itself took a couple of generations to lever full authority and create a single kingdom despite the Vikings wrecking most of the succession in the kingdoms.
A unified Danish influenced single England would be possible but with no single ruler able to promote why they deserve the mantle of sole king you'd probably see a return of the Bretwalda office which was more akin to the Irish High King or the Holy Roman Emperor; a loose federal kingdom rather than the centralised state desired by Cnut, William, et al.
Cnut becoming King of England wasn't a conquest like the Bastard's but more an English succession war where one claimant happened to be King of Denmark.I think an interesting question would be how this would the situation on Scandinavia. Would there still be a unification of Denmark and Norway, with stronger kings ruling over large areas? In OTL, the Danish king Knut the great was king of England 1016-1035 and in 1066 the Norwegian king Harald Hardarada made an attempt for the English crown. What would happen in Scandinavia in this scenario? If there still was a growth of large kingdoms, an ATL Scandinavian king might perhaps conquer large parts of Britain.
Cnut becoming King of England wasn't a conquest like the Bastard's but more an English succession war where one claimant happened to be King of Denmark.
Scandinavia itself is likely to form into 3 or 4 kingdoms (based on maximising authority of the trade routes), the effect of external influence on how those combined is difficult to quantify without knowing more on the probable history following Alfred's failure. How much political effect did England have on the Scandinavian kingdoms OTL?
The interesting thing isn't the logistics of the campaign but the cultural effects, after all.
So what would be the consequences of a ninth century Viking conquest of Wessex?
I think an interesting question would be how this would the situation on Scandinavia. Would there still be a unification of Denmark and Norway, with stronger kings ruling over large areas? In OTL, the Danish king Knut the great was king of England 1016-1035 and in 1066 the Norwegian king Harald Hardarada made an attempt for the English crown. What would happen in Scandinavia in this scenario? If there still was a growth of large kingdoms, an ATL Scandinavian king might perhaps conquer large parts of Britain.
Cnut becoming King of England wasn't a conquest like the Bastard's but more an English succession war where one claimant happened to be King of Denmark.
Scandinavia itself is likely to form into 3 or 4 kingdoms (based on maximising authority of the trade routes), the effect of external influence on how those combined is difficult to quantify without knowing more on the probable history following Alfred's failure. How much political effect did England have on the Scandinavian kingdoms OTL?
At least when it comes to Norway, Christianity mainly arrived from England. I am not sure about Denmark and Sweden. The unification of Norway happened some time at the end of the ninth century (possibly 872, but maight be later), a long time before Norway became officially Christian, so with a POD at the battle of Ethandun (which might have taken place after the battle of Hafrsfjord), unification of Norway might still happen. I don´t know enough about the situation in Denmark, but as far as I understand Denmark still had several competing petty kings at this time, but some kind of unification does not seem unlikely.
Biggest thing is a lot of Danish settlers settle in conquered Proto-England rather than going to Iceland or Normandy. It's not like their lands are going be reconquered and a lot of Danes just want land.
Do we have any knowledge about the strength of the Viking army at for instance the battle of Ethandun? What is known about the battle itself and are the sources trustworthy?
I doubt a unified Danish kingdom in the heptarchy is that possible.
Wessex itself took a couple of generations to lever full authority and create a single kingdom despite the Vikings wrecking most of the succession in the kingdoms.
A unified Danish influenced single England would be possible but with no single ruler able to promote why they deserve the mantle of sole king you'd probably see a return of the Bretwalda office which was more akin to the Irish High King or the Holy Roman Emperor; a loose federal kingdom rather than the centralised state desired by Cnut, William, et al.
Just covered it. I kinda think the conquest of Wessex is key to a more lasting Norse cultural influence.
The Danes didn't go to Iceland - Norwegians did. Generally believed to be a Westnorwegian exodus upon the christening of the country by kings as Haakon Adelsteensfostre/Gode Olav Tryggvason and Olav the Holy/Saint Olav. Danes did go to Britain and Normandy.