Margaret I of Denmark
In 1398, King Albert of Sweden pledged the island of Gotland to the Order in an attempt to curtail the predatory attacks of the Victual Brothers on maritime shipping throughout the Baltic Sea. Later that year Konrad lead a successful invasion force and destroyed Visby. This would bring Konrad into conflict with the newly formed Kalmar Union under Queen Margaret I of Denmark when the Order refused to relinquish Gotland.