rollo

noun

1. Also called Rolf, Roy, Hrolf, Rolf the Ganger. a.d. c860–931?, Norse chieftain: 1st duke of Normandy 911?.
2. a male given name, form of Rolf.

noun

1. ?860–?930 ad, Norse war leader who received from Charles the Simple a fief that formed the basis of the duchy of NormandyAlso: Rolf, Rolf the Ganger