Eric II, having dispatched Harald Kresla and most of his sons, now seeks to consolidate and legitimize his rule over Denmark.

He awards titles and privileges to his supporters, and proclaims Archbishop Asser's nephew as Bishop Eskil of Roskilde.

Eric is defeated in 1135 in a naval battle near the coast of Denmark, and Slavs under duke Ratibor I, Duke of Pomerania, sack Roskilde.

Pomeranian ships from Szczecin, from the southern coast of the Baltic Sea, had attacked the Danish coast in the 1120s.

Duke Ratibor on August 10, 1135, assaults the Norwegian towns.

Konghelle is captured and burnt to the ground by Ratibor's forces, assisted by a fleet of five hundred and fifty ships with cavalry on board (each carrying forty-four men and two horses).

They lay the town in ruins, kill a large part of the population, and abduct most of the survivors as thralls to Szczecin.

Snorri Sturluson, writing a century later, says that Konghelle never completely recovered.

Eric, on learning that Eskil has raised the nobles of Zealand against him, races north to put down the rebellion, which had spread rapidly across Funen and Jutland, and fines Eskil heavily.