The Children of Adam and Eve

Rollo the Viking was granted land in Northwestern France in 911 AD by
Charles the Simple, King of France. Charles hoped that Rollo would defend
his new land, barring the length of the Seine River to other Viking
groups. Rollo remained faithful to Charles and he and his son quickly
expanded the original land grant at the expense of neighboring French
Lords and guarded it well against Viking rivals. Even before Rollo's
grandson Richard took over the domain in 942, the descendants of the
Vikings had accepted Christianity, intermarried with the local population
and adopted the French language. AlReady they were being called Normans,
a contraction of Northmen, and there territory became known as Normandy.
Richard's great-grandson was King William I, conqueror of England. Rollo
was also known as "Rolf."