Valdemar II
Banned
From 1563-1570 a alliance of Denmark, Poland and Lübeck fought Sweden over control of Estonia and Latvia. Sweden did well thanks to bad luck and some incompetence on the side of the alliance, but a secondary war with Russia made the Swedes make peace.
Potential PODs:
Much of the Danish fleet was lost in a storm near Gotland in 1566, which premited the Swedes to cut the Danish of in the east and gain grain from Germany. Continued Danish naval dominans would likely result in Estonia (together with the Bishopric of Ösel being in the hands of the Danish kings brother) going to Denmark, Courland to Poland and Livonia/Livland staying independent, and of course Elfborg(Göteborg) to Denmark.
Another POD are more interesting:
The peace treaty are kept, Denmark should according to the peace treaty receive Estonia as a fief, but as part of the HRE (against Sweden receiving money from the Emperor). In the end the Emperor didn't pay and Estonia ended up Swedish. The consequences of this are likely much like the early treaty except Courland, Livonia, Ösel and Estonia end up part of HRE. This isn't a bad deal for the emperor, the imperial fiefs still paid a imperial tax at the time (the princes collected it, and kept a significant part of it themself).
In both PODs we end up with a strong Danish presence in the area, especially because Magnus died childless in OTL, which mean that his territories end up back to his brother. Sweden lose the money of the Baltic trade, and likely Danish control of Baltic Sea are going to complete. Denmark and Poland will likely end up fighting over Livonia and Courland. While a poorer Sweden are much more limited in foreign adventures.
Potential PODs:
Much of the Danish fleet was lost in a storm near Gotland in 1566, which premited the Swedes to cut the Danish of in the east and gain grain from Germany. Continued Danish naval dominans would likely result in Estonia (together with the Bishopric of Ösel being in the hands of the Danish kings brother) going to Denmark, Courland to Poland and Livonia/Livland staying independent, and of course Elfborg(Göteborg) to Denmark.
Another POD are more interesting:
The peace treaty are kept, Denmark should according to the peace treaty receive Estonia as a fief, but as part of the HRE (against Sweden receiving money from the Emperor). In the end the Emperor didn't pay and Estonia ended up Swedish. The consequences of this are likely much like the early treaty except Courland, Livonia, Ösel and Estonia end up part of HRE. This isn't a bad deal for the emperor, the imperial fiefs still paid a imperial tax at the time (the princes collected it, and kept a significant part of it themself).
In both PODs we end up with a strong Danish presence in the area, especially because Magnus died childless in OTL, which mean that his territories end up back to his brother. Sweden lose the money of the Baltic trade, and likely Danish control of Baltic Sea are going to complete. Denmark and Poland will likely end up fighting over Livonia and Courland. While a poorer Sweden are much more limited in foreign adventures.