In the following year Sweden was forced into a war which lasted up to
1536, the so-called "Feud of the Counts," the chief participants being
the counts of Holstein, Oldenburg and Hoya. Sweden sided with Christian
of Holstein, who fought for his rights to the throne of Denmark after
his father Frederic, being opposed by the other counts and by Lubeck.
Hard and repeated pressure was brought to bear on Svante Sture, a son
of Lord Sten and Christine Gyllenstierna, to appear as a pretender
against Gustavus; but the noble youth, who was sojourning in Germany,
firmly withstood these temptations. His mother had married John
Turesson, a son of the traitor Ture Joensson, who was as able a man as
his father was a bad one, being the successful commander of a Swedish
army which invaded the Danish provinces held by the count of Oldenburg.
A Swedish fleet, created through sacrifices of nobles and peasants,
distinguished itself repeatedly. The war ended in the defeat of Lubeck.