Is the Dutch surname Van associated with the Nobility?

I can see how my aunt mixed up Van and Von. She’s been researching the family since the 1970’s. It’s easier today with the Internet. Although there’s also a lot of misinformation out there too.

She originally found our coat of arms in an old Parish church in Louisiana. A lot of our distant family from the 1800’s is buried there. The coat of arms has turned up several times in research and it’s been consistent.

Thanks again.