Albert the Bear was the first margrave of Brandenburg from 1157 to his death and was briefly duke of Saxony between 1138 and 1142.

Canute V Magnussen was a King of Denmark from 1146 to 1157, as co-regent in shifting alliances with Sweyn III and Valdemar I. Canute was killed at the so-called Bloodfeast of Roskilde in 1157. Nothing certain is known about his person and character.

Conrad I, called the Great, a member of the House of Wettin, was Margrave of Meissen from 1123 and Margrave of Lusatia from 1136 until his retirement in 1156. Initially a Saxon count, he became the ruler over large Imperial estates in the Eastern March and progenitor of the Saxon electors and kings.

Helmold of Bosau was a Saxon historian of the 12th century and a priest at Bosau near Plön. He was a friend of the two bishops of Oldenburg in Holstein, Vicelinus and Gerold, who did much to Christianize the Polabian Slavs.

Henry the Lion was a member of the Welf dynasty who ruled as the duke of Saxony and Bavaria from 1142 and 1156, respectively, until 1180.

Sweyn III Grathe was the King of Denmark between 1146 and 1157, in shifting alliances with Canute V and his own cousin Valdemar I. In 1157, the three agreed a tripartition of Denmark. Sweyn attempted to kill his rivals at the peace banquet, and was subsequently defeated by Valdemar I at the Battle of Grathe Heath and killed.

Vicelinus was a German bishop of Oldenburg in Holstein who was considered the apostle of Holstein. Also known as – Apostle of Obodriten, of the Wends, Vicelinus, Vincelin, Vizelin, Wissel, Witzel, Wizelin.