Coronation of Charlemagne

The event

By the year 800, Charlemagne, king of the Franks, had built through decades of military campaigning the largest and most powerful kingdom in Western Europe since the fall of Rome, encompassing most of modern France, Germany, and northern Italy, alongside forcibly Christianized Saxon territories to the northeast.

On Christmas Day, 800, while Charlemagne was attending Mass at St. Peter's Basilica in Rome, Pope Leo III placed a crown on his head and proclaimed him Emperor — a coronation later Frankish sources describe Charlemagne as having found somewhat surprising, though most historians consider this framing likely a diplomatic fiction designed to obscure the coordinated political nature of the event.

The coronation was politically significant on multiple levels: it revived, at least symbolically, the title and prestige of Roman Emperor in the West over three centuries after its lapse in 476; it strengthened Leo III's own contested position as pope, having recently survived a violent attack and needing powerful protection; and it established a durable, if often fraught, precedent that Western Christian imperial legitimacy could be conferred or withheld by the papacy.

Charlemagne's court at Aachen also became the center of the Carolingian Renaissance, a deliberate program of educational and cultural revival led by scholars including Alcuin of York, which standardized monastic education, promoted the correction and copying of biblical and patristic texts, and helped preserve a substantial portion of surviving classical Latin literature through the copying efforts of Carolingian monasteries.

The empire Charlemagne built fragmented among his heirs within a few generations, but the precedent of his coronation shaped the later development of the Holy Roman Empire and fed directly into subsequent medieval conflicts over the relative authority of popes and emperors, including the eleventh-century Investiture Controversy.

Other witnesses

• Einhard, Life of Charlemagne
• Royal Frankish Annals, entry for 800

Further reading

• Christian History Magazine 108: Charlemagne — free full issue
• Catholic Encyclopedia (1913): Charlemagne