Lothair III, sometimes numbered Lothair II and also known as Lothair of Supplinburg, was Holy Roman Emperor from 1133 until his death. He was appointed Duke of Saxony in 1106 and elected King of Germany in 1125 before being crowned emperor in Rome. The son of the Saxon count Gebhard of Supplinburg, his reign was troubled by the constant intriguing of the Hohenstaufens, Duke Frederick II of Swabia and Duke Conrad of Franconia. He died while returning from a successful campaign against the Norman Kingdom of Sicily.
The House of Zähringen was a dynasty of Swabian nobility. The family's name derived from Zähringen Castle near Freiburg im Breisgau. The Zähringer in the 12th century used the title of Duke of Zähringen, in compensation for having conceded the title of Duke of Swabia to the Staufer in 1098. The Zähringer were granted the special title of Rector of Burgundy in 1127, and they continued to use both titles until the extinction of the ducal line in 1218.
Henry the Proud, a member of the House of Welf, was Duke of Bavaria from 1126 to 1138 and Duke of Saxony as well as Margrave of Tuscany and Duke of Spoleto from 1137 until his death. In 1138 he was a candidate for the election as King of the Romans but was defeated by Conrad of Hohenstaufen.
Frederick II, called the One-Eyed, was Duke of Swabia from 1105 until his death, the second from the Hohenstaufen dynasty. His younger brother Conrad was elected King of the Romans in 1138.
Hermann I, Landgrave of Thuringia and Count Palatine of Saxony, was the second son of Louis II, Landgrave of Thuringia, and Judith of Hohenstaufen, the sister of Emperor Frederick Barbarossa.
Otto of Nordheim was Duke of Bavaria from 1061 until 1070. He was one of the leaders of the Saxon revolt of 1073–1075 and the Saxon revolt of 1077–1088 against King Henry IV of Germany.
Gertrude of Süpplingenburg was Duchess of Bavaria, Margravine of Tuscany, and Duchess of Saxony by marriage to Henry X, Duke of Bavaria, and Margravine of Austria and Duchess of Bavaria by marriage to Henry II, Duke of Austria. She was regent of Saxony during the minority of her son Henry the Lion in 1139–1142.
Welf VI was the margrave of Tuscany (1152–1162) and duke of Spoleto (1152–1162), the third son of Henry IX, Duke of Bavaria, and a member of the illustrious family of the Welf.
Gandersheim Abbey is a former house of secular canonesses (Frauenstift) in the present town of Bad Gandersheim in Lower Saxony, Germany. It was founded in 852 by Duke Liudolf of Saxony, progenitor of the Liudolfing or Ottonian dynasty, whose rich endowments ensured its stability and prosperity.
Bernhard, a member of the House of Ascania, was Count of Anhalt and Ballenstedt, and Lord of Bernburg through his paternal inheritance. From 1180 he was also Duke of Saxony.
Lutgard of Salzwedel or Liutgard/Luitgard of Stade, was Queen of Denmark as the wife of King Eric III.
Poppo I of Blankenburg probably came from the House of Reginbodonen and was Count of Regenstein-Blankenburg in the Harz in central Germany.
The Duchy of Thuringia was an eastern frontier march of the Merovingian kingdom of Austrasia, established about 631 by King Dagobert I after his troops had been defeated by the forces of the Slavic confederation of Samo at the Battle of Wogastisburg. It was recreated in the Carolingian Empire and its dukes were appointed by the king until it was absorbed by the Saxon dukes in 908. From about 1111/12 the territory was ruled by the Landgraves of Thuringia as Princes of the Holy Roman Empire. When Frederick IV, the last independent ruler of Thuringia died in 1440, the territory passed to his nephew, the saxon elector Frederick II.
Otto III of Ravensberg was Count of Ravensberg from 1249 until his death.
Heilika of Pettendorf-Lengenfeld was by marriage Countess Palatine of Bavaria.
Sophie of Winzenburg was the first Margravine of Brandenburg.
Herman I, Count of Winzenburg was count of Formbach and Radelberg. From 1109 to 1130, he was also Count of Winzenburg and from 1122 to 1138, he was Count of Reinhausen. He was also Landgrave of Thuringia from 1111 to 1130 and Margrave of Meissen from 1124 to 1130. And finally, he was high bailiff of Corvey Abbey.
Otto I, Count of Salm was a German nobleman. He was a ruling count of Salm and from 1125 to 1137, he was co-ruler of the County Palatine of the Rhine with his stepson William.
Richenza was a German noblewoman. By her first marriage, she was Countess of Werl. By her second marriage, she was Countess of Northeim, and from 1061 to 1070, Duchess of Bavaria.
Udo IV, Margrave of the Nordmark and Count of Stade and Count of Freckleben, son of Rudolf I, Margrave of the Nordmark, and Richardis, daughter of Hermann von Sponheim, Burgrave of Magdeburg. It is unclear why he went by the abbreviated name of Udo as opposed the traditional Lothair Udo of his ancestors.
