985 - Orkney power change

Eric the red returned from his Greenland expedition to recruit settlers in Iceland. Hundreds of Vikings boarded their long ships with domestic animals and sailed west to Greenland. 25 ships sailed, but only 14 arrived the year was 986, it was not possible to brew beer or bake bread, because the summer was to short. But there was plenty of game and fish, and cattle and pigs, sheep and goats were present. Maybe up to 3000 people lived in Greenland and they later got a bishop in Gardar.
Earldom of Orkney

Sigurd the strong was Earl of Orkney until 1014
Eric the victorious fought against Styrbjorn over who should have supremacy over Sweden.