in 1313, the king of Sweden, Birger Magnusson, went on an expedition towards Gotland in order to increase taxes there.

[2] The exact outcome of the war is debated, in Olaus Petri's Swedish chronicle, which was written in the 16th century, it is said that the taxes imposed on the Gutes was increased to 110 marks of lead silver and that the ledungslam was raised to 90 marks of lead silver, which was imposed both on the burghers in Visby and the Gutes living on the countryside.

[2][3] The Gutes were also forced to hand over a third of any valuable ore they find on the island, which is considered a victory for Birgers regal ideas.

[2][3] Another proof of Birger's war being successful is a letter that was sent to "the elder of the island of Gotland and its congregation".

The letter, which was dated August 25, 1320, contains good news: the Swedish National Council had decided to cancel the extraordinary taxes that King Birger had imposed on the Gutes.