David, you should have gotten in contact with me years ago!!!:)
We had a great Doriot nationwide reunion in Milwaukee! I was later able to find some of our living relatives in Switzerland - and just last week got an email for a Gerard Doriot to whom we are probably related.
I hope we can make more contact with Gustave descendants, our cousins, through this forum. Please drop me an email at RDoriot@ufm.org! I have a web page also: http://www.jesus-connect.net/world/jesus/Doriothttp://www.jesus-connect.net/world/jesus/Doriot.