
The Siege of Paris in 885–886 stands as one of the defining episodes of the Viking Age in Francia. Orchestrated by a large Norse force and resisted by a resolute Frankish defence, it tested the cohesion of the Carolingian world during the reign of Charles the Fat. The siege is notable for its scale, duration, and the political consequences that followed.
Historical Context
By the late 9th century, Viking raids had escalated into full-scale military campaigns targeting the heart of the Carolingian Empire. Paris, located on the strategic Île de la Cité, was an ideal target: rich, influential, and symbolically vital. Viking forces, emboldened by past successes along the Seine, returned in 885 in what would become the most significant northern assault on the city.
Forces Involved
Viking Forces
- Estimated Numbers: Between 300 and 700 longships, with up to 5,000 warriors
- Leaders: Sigfred, possibly Rollo (later Duke of Normandy), and Sinric
- Composition:
- Norse warriors (primarily Danish and Norwegian)
- Seasonal raiders and professional warbands
- Light infantry, some equipped with axes, swords, and round shields
- Archers and engineers (for siege construction)
Frankish Defenders
- Garrison Strength: Between 200 and 1,000 defenders at the outset
- Commanders:
- Count Odo of Paris (later King of West Francia)
- Bishop Gozlin of Paris
- Count Henry of Saxony (arrived later)
- Troop Composition:
- Local militia and feudal levies
- Carolingian infantry and cavalry
- Clergy-led defence units
- Reinforcements from East Francia under Charles the Fat
Side | Estimated Troops | Leaders | Key Units |
---|---|---|---|
Vikings | ~5,000 | Sigfred, Sinric, possibly Rollo | Longship crews, axe warriors, siege engineers |
Franks | ~1,000–2,000 | Count Odo, Bishop Gozlin, Charles the Fat | Militia, cavalry, city guards, East Frankish reinforcements |
Arms and Armour
Viking Weaponry and Armour
- Swords: Predominantly pattern-welded, double-edged swords (Type H and X under Petersen’s typology), with simple crossguards and lobed pommels.
- Axes: Bearded axes and later broad-bladed variants used for both hand-to-hand and throwing.
- Spears: Leaf-bladed thrusting spears common, with some barbed for anti-cavalry use.
- Armour:
- Mail hauberks for wealthy warriors
- Helmets with spectacle-style eye guards or conical nasal helms
- Wooden round shields, often painted and fitted with iron bosses
Frankish Weaponry and Armour
- Swords: Carolingian blades influenced by Frankish smithing, often with inscribed hilts and higher-quality steel. Some carried Ulfberht swords, noted for superior composition.
- Lances: Longer than Viking spears, often used from horseback.
- Crossbows: Some accounts suggest early Frankish use in defence, particularly on the walls.
- Armour:
- Chainmail hauberks among nobility and garrison leaders
- Conical helmets with nasal guards
- Kite or oval shields in use alongside older round types
Timeline of the Siege

Date | Event Description |
---|---|
Late October 885 | Viking fleet sails up the Seine and demands tribute. Odo refuses. |
November 885 | Initial Viking assault using siege towers and battering rams fails. Bridge towers hold. |
Winter 885–886 | Siege drags on. Vikings attempt to breach walls via tunnelling and fire. Paris resists. |
Spring 886 | Vikings break off full siege and begin ravaging surrounding countryside. |
Summer 886 | Charles the Fat arrives with imperial forces. He bribes Vikings to leave Paris and attack Burgundy instead. |
October 886 | Vikings withdraw. Odo emerges as a hero; royal authority is weakened. |
Contemporary Accounts and Quotes
The Annales Vedastini and Abbo of Saint-Germain-des-Prés’ Bella Parisiacae Urbis offer vivid records of the siege. Abbo, a monk and eyewitness, described the city’s resistance:
“Night and day they stood, not for coin or king, but for honour and faith… the Seine ran red with blood, yet still the Northmen howled at our gates.”
He also noted the resilience of Bishop Gozlin:
“The bishop fought with staff and sword alike, bleeding not just prayers but blood, as if heaven itself stood with Paris.”
Archaeology
Excavations around the Île de la Cité and early medieval Paris have revealed:
- Traces of wooden palisades and early stone fortifications
- Remains of collapsed structures consistent with fire damage from siege warfare
- Coins and weapon fragments, including Viking axes and Frankish lance heads
- Indications of mass graves outside the city’s medieval perimeter
No substantial remnants of siege towers or longships have been found, but the presence of Norse materials supports accounts of prolonged occupation and raiding in the area.
Legacy
The Siege of Paris exposed the fragility of Carolingian power and elevated Odo as a legitimate leader. His heroism laid the groundwork for his later election as King of West Francia. It also marked the beginning of a political shift that would eventually legitimise the Viking presence in Normandy. The decision by Charles the Fat to buy off the attackers was widely condemned and hastened the decline of imperial authority.
The siege remains a turning point in medieval European history, where the fusion of Viking aggression and Frankish resistance reshaped the balance of power along the Seine.
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