Lothair III
Who was Lothair III?
Holy Roman Emperor from 1133 to 1137
Biographical data adapted from Wikipedia’s article on Lothair III (CC BY-SA 4.0).
Biography
Lothair III of Supplinburg (c. 1075-1137) rose from Saxon nobility to become one of the most important Holy Roman Emperors of the 12th century. Born in Unterlüß as the son of Count Gebhard of Supplinburg, he inherited substantial lands in Saxony that became the base of his political strength. His marriage to Richenza of Northeim further solidified his standing among Saxon aristocrats and added to his territories. After being named Duke of Saxony in 1106, Lothair showed remarkable military and administrative skills that brought him recognition throughout the German territories.
The death of Emperor Henry V in 1125 led to a succession crisis that became a key moment in Lothair's career. Even though the Hohenstaufen dynasty had strong claims, the German princes elected Lothair as King of Germany, recognizing his leadership and potential to keep the realm stable. His reign began with ongoing conflicts with the powerful Hohenstaufen brothers, Frederick II of Swabia and Conrad of Franconia, who often challenged his rule through political schemes and military actions.
Lothair's imperial coronation in Rome in 1133 marked the peak of his political rise, but also increased his duties across a big and divided realm. As emperor, he was active in foreign affairs, expanding German influence into Italy and Eastern Europe. His military efforts against the Norman Kingdom of Sicily showed his determination to assert imperial authority in southern Italy, upholding usual imperial claims over these lands. These southern campaigns needed plenty of resources and personal effort, and eventually led to his death while returning from a successful military expedition.
The emperor's reign, though fairly short, took place during a crucial time in medieval European politics. His clashes with the Hohenstaufens hinted at the later struggles in German politics, while his campaigns in Italy kept the traditional imperial presence there. Lothair died on December 4, 1137, in Breitenwang, leaving behind a complex political scene that soon saw the Hohenstaufen return to power under Conrad III, despite Lothair's attempts to stop their rise.
Before Fame
Lothair grew up during the chaotic political scene of late 11th-century Saxony, where noble families constantly jostled for land and imperial support. As the son of Count Gebhard of Supplinburg, he inherited substantial lands and the complex alliances and feuds typical of Saxon politics. The Investiture Controversy between Emperor Henry IV and Pope Gregory VII offered chances for ambitious nobles like Lothair to climb the ranks by cleverly choosing sides.
When he became Duke of Saxony in 1106, it marked his rise as an important political player during Henry V's reign. The emperor needed dependable allies to strengthen his rule, and Lothair's proven military skills and ability to keep order in the often unruly Saxon duchy made him a valuable partner. At the same time, Lothair built his own power base for future political gains.
Key Achievements
- Elected King of Germany in 1125, defeating Hohenstaufen claims to the throne
- Successfully maintained imperial authority despite constant Hohenstaufen opposition
- Crowned Holy Roman Emperor in Rome in 1133 by Pope Innocent II
- Led successful military campaigns against the Norman Kingdom of Sicily
- Strengthened Saxon territorial control and ducal administration
Did You Know?
- 01.He was sometimes called Lothair II because there had been an earlier Carolingian emperor named Lothair
- 02.His duchy of Saxony was considered one of the most difficult to govern due to the independence of its noble families
- 03.He was crowned Holy Roman Emperor in Rome by Pope Innocent II, strengthening papal-imperial relations
- 04.His death in Breitenwang occurred in the Austrian Alps while returning from his Italian campaign
- 05.He was the last Holy Roman Emperor from the Saxon region until the early modern period