Conan II refused to aid a ruler of this ethnicity who defeated a rebellion at the Battle of Val-ès-Dunes [vall-ay-dyoon] early in his reign.
Leaders of this ethnicity crushed a disorganized Varangian Guard that pursued them at the Battle of Dyrrachium, and earned praise for their terrifying appearance from Anna Comnena. Conan II refused to aid a ruler of this ethnicity who defeated a rebellion at the Battle of Val-ès-Dunes [vall-ay-dyoon] early in his reign. This was the ethnicity of Tancred of Hautville [oat-VEEL] whose adventurer sons, including (*) Robert Guiscard and Roger I, conquered much of southern Italy and Sicily. They acquired an independent duchy under Rollo's leadership. A ruler of this ethnicity commissioned the Domesday Book to document his gains after winning the Battle of Hastings. For 10 points, name this ethnic group of Viking origin, whose members included William the Conqueror.
Leaders of this ethnicity crushed a disorganized Varangian Guard that pursued them at the Battle of Dyrrachium, and earned praise for their terrifying appearance from Anna Comnena.
Normans [prompt on Vikings or Norsemen or Scandinavians] &lt;AF, ContHist&gt;