Almost every year of the 1150s has been suggested as the year that the crusade possibly took place. Most widely supported years have been years 1150, 1155, 1157 and 1158. Other candidates have been years 1153, 1154 and 1156. At the time, leading the leiðangr was the responsibility of the jarl.
After the death of Obotrite Prince Henry, a Christian, Niklot allegedly renounced Christianity in favor of traditional pagan beliefs. However, this is uncertain; according to Helmold's Chronica Slavorum, Niklot promised to Christianize his lands as part of the peace agreement, and in the late 1150s he wrote to Henry the Lion: