I took five years of Old Norse when I was going to school. It wouldn’t have helped you. Modern Norwegian is considerably different from Old Norse. If your grandparents had been Icelandic, however, it would have been different. The writtten language hasn’t changed much in over a thousand years, and the spoken language very little. If Eirik the Red sailed through a time warp and showed up tomorrow in Reykjavik harbor, he could talk to the people and be understood (but he would have an odd accent). It would be as if any schoolchild could pick up a copy of Beowulf and read it without having to translate, or carry on a conversation with Ælfred the Great.Just once, I’d like to see a cartoonist draw a Viking with an authentic helmet, i.e., one that doesn’t have horns.