I vaguely recall something about "higher" tier vikings being buried with their gear; sword(s), armor, etc. Something recently about a viking buried along with a ship, too, though I can't find the link in my bookmarks. Viking is way earlier than my couple centuries of interest, so best I can do is point you towards that as a possibility - but as far as being done a la Highlander with the sword upright - no, none that I know of.