+**Rollo** was a formidable [Viking](/wiki/viking) chieftain who led Norsemen into Frankish lands. Through a pivotal treaty, he became the first ruler of [Normandy](/wiki/normandy), establishing a powerful lineage.
+## See also
+- [Norsemen](/wiki/norsemen)
+- [France](/wiki/france)
+- [Treaty](/wiki/treaty)
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