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Phillip Knowlton is a retired  American vintner in the Russian River Valley of California. The boutique vineyard produces grapes sustainably-grown and sold to award-winning wineries in Sonoma and Napa Counties. In 2007 the vineyard farm was designated as a botanical sanctuary for North American at-risk and endangered medicinal plants by United Plant Savers.


Knowlton was born to a Jewish and Christian mother and father. He grew up with his New England parents, Calvin Knowlton an accountant, and mother Esther (née Baker), a librarian. He graduated from  Derby Academy, a public high school in Vermont. He attended Boston University and received a B.A. from Lyndon State College and an M.A. in Counseling Psychology from The New Mexico State University.  


After a practice in clinical and counseling psychology, he suspended Ph.D. studies in psychology in the San Francisco Bay Area.


Knowlton has been married and divorced twice. He was ( m.1979--d.1987) to Carol (née Rawland ) Knowlton, MD. They have two adult children.

And was (m.2004--d.20015) to Suzanne (née Colglazier ) Fitzgerald.


He is retired from micro-investments in the arts, entertainment and technology ventures in the San Francisco Bay Area.

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