Rollo

[ rol-oh ]
/ ˈrɒl oʊ /
|

noun

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

Rollo

/ (ˈrɒləʊ) /

noun

?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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012