← Explore on the interactive map
Accession of Count Robert I of Flanders (1071)
In 1071 Robert I ('Robert of Frisia') defeated and killed his nephew Arnulf III at the Battle of Cassel, seizing the County of Flanders and reshaping…
Timeline
- 1071Flanders · FlandersAfter the death of Robert the Old (Robert V), his son Arnulf III and his uncle Robert I (Robert of Frisia) contested the County of Flanders, each recruiting outside support such as King Philip I of France and Duke William I of Normandy, and the situation escalated into armed conflict.
- 1071Cassel · Northern FranceAt the Battle of Cassel in 1071, Robert I led his army to defeat Arnulf III, who died in battle; Robert thus became Count of Flanders, beginning a reign of over thirty years that further advanced the county's economy and cities.
Sources
- Encyclopaedia Britannica: Robert I https://www.britannica.com/biography/Robert-I-count-of-Flanders
- The Battle of Cassel, 22 February 1071 — David Nicholas (1978)