Did Vikings really do that? Somehow the concepts of chivalry, and the gradations from page to squire to knight and all that are too orderly for these folk. Instead, were they in their longboats, and with battleaxes, fighting back at the encroaching and violent Christians and their forced religion, including Charlemagne beating at the Saxon doors not far south. See Western Ethnic Violence Timeline/
Not sure. So enjoy the joust.