The Diocese of the Faeroe Islands have had a shifting of superiors; Bremen, Lund and Trondheim during catholic times. Following af breif spell of independence in the wake of the Reformation it went to Bergen 1557 only to be passed on to Sjaelland, Denmark, Iceland and then Sjaelland once again.
Iceland during catholic times had two Dioceses in Skalholt and Holár later moved to Rejkjavik but it too had a number of superiors before this - Lund and Trondheim.
Greenland had its own bishop since 1124 subjected to Trondheim since 1152. When Hans Egede arrived in 1721 he reintroduced christianity and was made bishop of Greenland 1740. The Diocese was placed under Sjaelland 1905 and then Copenhagen until independence 1993.
With all this shifting around an AH could run like this.
During the Middle Ages the communications across the North Atlantic was hard to uphold. From time to time the dioceses was isolated. In order to counter this mainly the inability of the Arch bishop of Nidaros (Trondheim) to uphold his authority the Bishops of Skalholt and Holár took it upon them to hold the reins.
It was a long process but over the centuries it became accepted by the peoples of the North Atlantic that the Iceland bishops meant someone to reckon with.
With the arrival of the Reformation the Icelandic Bishops struggled to keep their seats but in the end to no avail.
But they managed to be the ones that peoples would turn to when communications with the outside failed and thus when the Lutheran-Protestant Church had to build a hierachy it became logic to establish a new seat at Rejkjavik that would supervise the Faeroe Islands and Greenland.
This happy state of affairs went on well until the Napoleonic Wars during which the North Atlantic Diocese had to fend for itself and then 1814 when the Treaty of Kiel separated Norway from Denmark but the Rejkjavik Diocese naturally went along Denmark as did the other Atlantic areas of Bjoeneoy, Jan Mayen and Svalbard.
The Norwegians of course protested, the Swedes were ignorant of these worthless areas and as such they went to Danish control.
The North Atlantic subjects of the Danish King thought of themselves as on the periphery of the Kingdom; which they of course indeed were!
1843 saw the re-institution of the Althing in Iceland now wieved as the government of all North Atlantic even if the inhebitants still were loyal to their King.
The events of 1848 were also felt in Iceland and the King felt the need to secure the loyalty of his North Atlantic subjects but the war of 1848-50 and the following inability of Icelanders and Kings negotiators to reach a settlement made for an open issue.
Come 1864 with German invasion of Denmark following disastrous Danish attempts at reconcile the rulers of the democratic Kingdom and hereditary ruled Duchies of Schleswig and Holstein in making a joint constitution which had to offend one or another the Danish army was defeated at Dybbol and then the Prussians crossed the sound to Als.
The Danes still being stubborn and falsely percieved themselves to have won the first war 1848-50 singlehanded now took things even further making for the Prussian commander Molkte to plan and execute the crossing of the Lillebaelt to finally crush the Danish army in that island.
Even the Danish defeat in the Heligoland Bight of the Austrian navy squadron didn't alter the fact that Denmark had gambled too high and lost.
The Danes now wanted to surrender and Bismarck were eager to let them just taking what he found appropriate but then the action of the Danish King tripped Bismarck in the making. The Prussian King himself much to the anger of Bismarck accepted the fealty oath of the Danish King to his Prussian majesty effectively incorporating the Kingdom of Denmark into the German Confederation as a Prussian satellite! But the Danish King kept his Duchies.
The Prussian King was elated; Bismarck sullen and Molkte recieved the Danish generals at Potsdam appointing new commands. In fact the Danes were on their own request that is relegated to provide the navy of the Prussians as well as a suitable Marines force.
With the Kingdom gone the Icelanders chose their own freedom and declared independence. Quite a number of onlookers watched the developments; but the British and USA managed a joint "Hands-off" to any would be takers. Now Prussia, Sweden and Russia all looked sullen but that was to be.
Pointing to the Monroe Doctrine the USA demanded that no Prussian warships enter the West Indies and that Danish governor and troops there now decide what to do. Being a Dane foremost the governor decided to throw in his lot with the Icelanders slightly enlarging the new state in territory but surely in populace.
1865 saw the Iceland President visit his counterpart in Washington signing a defence treaty. Then another was signed in London.
The treaties meant security but it also demanded action by the Icelanders. A small navy to patrol the vast vast waters had to be created and a gendarmerie as well. It wouldn't last a second should anybody offend the Icelanders but then they had two big brothers watching their backs!
The numbers of North Atlantic fishermen made for currency to be obtained as did the cryolite mine in Greenland. As time went by and greater needs for aluminium arose so did the prospect of Iceland to prosper.
(the rest may be conjured up another day
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