Rollo (or Rollone) (860 - 932), known as "the Walker" (Hrolf in Norwegian), was one of the most famous Vikings in history, particularly for founding the dynasty of the Dukes of Normandy—a lineage from which many English kings descended, including King Charles III as a distant descendant. 

Towering over two meters tall with a robust physique, Rollo was so massive that, according to the sagas, he struggled to mount a horse, earning him the nickname "the Walker" since he primarily traveled on foot or by ship. It was aboard Viking ships that Rollo built his fortune, becoming a feared raider as a teenager. His relentless attacks on merchant vessels led to his banishment from Norway by King Harald I. 

In 875, he took command of a group of outlaw Vikings—both Danes and Norwegians—and raided the coasts of the North Sea, eventually reaching England. By 886, he participated in the siege of Paris (which lasted until 900), where he successfully captured Rouen. His prowess as a warrior and leader did not go unnoticed by the Franks. 

Thus, in 911, King Charles "the Simple" granted Rollo the land that would become known as Normandy, as he was without a homeland. In exchange for converting to Christianity, defending the territory from his former Viking comrades, and marrying the king's daughter, Rollo secured a homeland for himself and his warriors, establishing the Duchy of Normandy. 

The monk William of Jumièges, in his Gesta Normannorum, recounts Rollo’s proud and defiant nature, even after converting to Christianity:

"Rollo refused to kiss King Charles' foot when receiving the Duchy of Normandy. However, at the Franks' insistence, he ordered one of his warriors to do it on his behalf. The warrior seized the king’s foot and lifted it to his mouth but did not bow—causing the king to fall to the ground. This led to an uproar of laughter and great commotion among the crowd."

Rollo died in 932 and was buried in Rouen Cathedral. His son, William, succeeded him.