Norwegian researches opened a tomb containing the remains of descendants of Viking leader Rollo in Normandy, France on Monday with the aim of putting an end to a centuries-long debate: was Rollo Danish or Norwegian? Norwegian researchers opened a tomb containing the remains of descendants of Viking leader Rollo in Normandy, France on Monday with the aim of putting an end to a centuries-long debate: was Rollo Danish or Norwegian? “We have worked on investigating this for about seven years, so to finally obtain material that we can test for DNA is huge,” historian Sturla Ellingvåg told NTB. Rollo was...