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Lothair I

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Lothair I was a significant political figure in the 9th century.

Bas-côté nord, baie III Lotharius Romanorum Imperator (milieu XIIIe)
Bas-côté nord, baie III Lotharius Romanorum Imperator (milieu XIIIe)

He belonged to the Carolingian dynasty, which ruled a massive empire in Europe. This dynasty was founded by his grandfather, the famous emperor Charlemagne. Lothair held several powerful titles during his lifetime. He served as the Emperor of the Carolingian Empire from 817 to 855. He was also the King of Italy and the King of Middle Francia. His life was defined by the struggle to manage these vast territories and maintain his family's authority.

Lothair's path to power was organized through specific legal documents. In 817, his father, Louis the Pious, issued the Ordinatio Imperii. This was a formal decree that established the succession of the empire. The document designated Lothair as the principal heir and the supreme overlord. It placed his younger brothers, Pepin I and Louis the German, under his authority.

Karolingische denier Lotharius Dorestad
Karolingische denier Lotharius Dorestad

Lothair was also intended to be the presumptive overlord of Italy. Following the death of King Bernard in 818, Lothair was awarded the kingdom of Italy. In 823, he was officially crowned King of Italy in Rome by Pope Paschal I.

As emperor, Lothair attempted to establish clear legal structures for his rule. In 824, he promulgated the Constitutio Romana. This was a statute designed to define the specific relationship between the pope and the emperor. It aimed to reserve supreme power for the secular leader, or the political ruler.

He also issued various ordinances to improve the general government of Italy. However, his reign was frequently interrupted by internal family conflicts. His stepmother, Judith, worked to secure a kingdom for her son, Charles the Bald. This created long-term tension regarding how the Frankish domains should be divided.

Lothair’s relationship with his father and brothers was marked by repeated rebellions. In 830, Lothair joined his brothers in a revolt to depose Louis the Pious. This was the first of several major uprisings. In 831, the emperor was reinstated, and Lothair lost his imperial title temporarily. Another rebellion occurred in 833, instigated by Angilbert II, the Archbishop of Milan. Despite these many conflicts, Lothair managed to retain his imperial position and his control over Italy through various reconciliations. These struggles were not just personal; they were about the fundamental structure of the empire.

When Louis the Pious died in 840, a major crisis began. Lothair was 45 years old and claimed the entire empire for himself. He disregarded the previous partitions and sought total control. His brothers, Louis the German and Charles the Bald, resisted this claim. This led to a three-year dynastic war. A decisive moment occurred on June 25, 841, at the Battle of Fontenay-en-Puisaye.

Vertrag von Verdun en
Vertrag von Verdun en

Lothair was defeated in this battle despite the personal bravery of himself and his nephew, Pepin II. This defeat forced him to abandon his capital and flee to Aachen.

The war eventually led to the Treaty of Verdun in August 843. This treaty was the result of negotiations that began on an island in the Saône.

Vertrag von Prüm
Vertrag von Prüm

Under this agreement, the empire was divided into three distinct parts. Lothair received the imperial title and a long strip of territory called Middle Francia. This land stretched from the North Sea to the Mediterranean Sea. It included the regions of Lorraine, Alsace, Burgundy, and Provence. He soon handed the kingdom of Italy to his eldest son, Louis II, while he focused on his new northern territories.

Lothair's later years were spent defending his lands against external threats. He faced attacks from the Northmen, often called Vikings, and the Saracens. In 845, he dealt with a rebellion in Provence led by the count of Arles, Fulcrad. In 846, Lothair even joined an expedition against the Saracens in Italy. By 855, Lothair became seriously ill. He chose to renounce his throne and divide his lands among his three sons through the Treaty of Prüm.

Vertrag von Prüm
Vertrag von Prüm

He entered the monastery of Prüm on September 23 and died six days later.

The political shifts during Lothair's life had massive historical consequences. The breakup of the Frankish Empire laid the foundations for modern France and Germany. The division of territory between his sons, Louis II, Lothair II, and Charles, further shaped the map of Europe. His reign illustrates how the decisions of individual leaders and the conflicts between family members can change the course of entire continents. The complex web of treaties and wars he navigated defined the borders and identities of many European nations for centuries to come.

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🖼️ Images & Media (5)
File:Vertrag von Verdun en.svg
Vertrag von Verdun en.svg
File:Vertrag von Prüm.svg
Vertrag von Prüm.svg
File:Karolingische denier Lotharius Dorestad.jpg
Karolingische denier Lotharius Dorestad.jpg
File:Medallion of Lothair, from the Lothaire Psalter.jpg
Medallion of Lothair, from the Lothaire...
File:Bas-côté nord, baie III Lotharius Romanorum Imperator (milieu XIIIe).jpg
Bas-côté nord, baie III Lotharius...
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