Good to hear from you! I didn't realize you were living in Savannah now. Allen is in Nashville, right? I talked to him on the phone in 94 or 95, when he was passing through Wisconsin (where I was studying at the time).
And, yes, so far as I can tell, we are descendents of the Vikings. My mother was a bit sceptical of all this, since she has long thought that Tuten is a German surname, but there is relatively little evidence for this belief-- and I have kept looking since I posted that message. In fact, if you go to Yahoo-France and type in "Toutain", you get all kinds of people with that name (but Tuten in Germany just gets you pages on handbags). In fact, I started looking up phonelists in small towns in Normandy, and even today there are high numbers of Toutains in that region -- even in the smallest towns. So, all in all, I think this version of events is the most likely yet offered (but I'd be interested in evidence in support of the German origins story).