I can't really help you to confirm the connection but in researching name derivations it is very possible it comes from Vollenweider. Historically names have been misspelled for one reason or another. Not hearing some one correctly or just not beling able to read someones writing. I have seen my last name spelled a dozen different ways. Families woulds have just excepted it and continued on. There are hundreds of reasons why the name could have been changed. It woulds take some digging on your part with other Vollenweiter's to find out where the shift came. There is just to much of a coincidence. Yes Vollenweider came from Switzerland. There is supposed to be a connection to Goodpasture and Vollenweider. Basically Jacob Vollenweider born in 1710 was to have came to the US and changed his name to Jacob Goodpasture. The translation is good. Vollen (Good) Weider (Pasture). And this is apparently recorded in the LDS Library in Salt Lake City, Utah. All that sounds good but we haven't been able to positively prove the connection. A trip to the LDS Library may be the only way we van verify it. But even that may not work because there may not be a source for the information listed. Do you have any information on the Vollenweider or Vollenweiter families in the 1600-1700?
If you search I am sure you will find a connection on your guestion. It just may take a lot of searching. Name changes aren't easy to verify. But you could draw some fairly good conclusions.
If you have any other questions please ask. I may not be able to help but maybe I can steer you to a source. Good Luck Dan Goodpaster