There are many family-owned and operated wineries in the county. Most are pretty small. I will not be able to find and list all of them; these I am familiar with.
Why should you and I support family owned and operated wineries? They will tend to care more about the land, what goes in a bottle that might have their name on it, about the local families that make a living from the wine business, and, of course, the money goes to a family trying to make a living rather than a string of corporate managers that don't know how to spell m̶e̶l̶l̶o̶ m̶a̶l̶o̶l̶a̶k̶ malolactic. :)
There are large companies that own multiple wineries calling themselves family-run, and they're not lying, but it's not the same as a ma and pa operation. There are ones that continue to have the word family in their name even though they've sold the business to a company and no longer run it. There are millionaire or billionaire owners, usually absentee, that also don't count, because you don't see many of them on a tractor.