I don't know if it does or not. What I can say is your information is new to me and more importantly the information comes from "left field" which means I would never have have run across it running my regular pattern searches. Isaac most likely pronounced his name Dan Vuzer even though most of his records spell his name as Van Dusen. However, there was one and only one record spelled Van Duzer.
This gives me some thing new to do. I am most delighted!
Thanks!