Wente Wine is a family-owned vineyard, you're correct. It was founded by an immigrant from Germany who was named, surprisingly, Wente. He put his sons to work and they passed it on to theirs.
Wente Wine was founded by the Wente family about 135 years ago and the California vineyard is still family owned and operated. It's one of wine country's best wine destinations.
Wente Wine comes from a family-owned vineyard by the name of Wente Vineyards. It is the oldest-continuing running winery by a family. It became a registed California landmark.