RE: Nancy Pelosi's Vineyards. It appears that she owns two.

Skellenger Lane Vineyard, and Zinfandel Lane Vineyard, both in St Helena CA.

Sauce: https://en.wikipedia.org/wiki/List_of_celebrities_who_own_wineries_and_vineyards

Interestingly enough, POTUS is included on the above list.

Skellenger Lane blog:

https://skellengerlane.wordpress.com/about/

Zinfandel Lane Pininterest (weird stuff here)

https://www.pinterest.com/pin/336573772123011766/

Not much on the Zinfandel lane one, it seems to be semi-scrubbed maybe? Not sure. Im not much of an autist, but I do know my wines and a bit about vineyards. Cellars are common, but not standard.