The Willow Creek Wine Co. is located on SōNA Estate. Brian and Natalie Brown are the owners and talent behind the award winning wine brands of Willow Creek Wine CO. Both winemakers professionally, the two already produced wine under multiple brands. Currently, they produce In Medias Res, Rococo Wines, Soubrette Wines, and Emerson Brown Wines. Although they have different winemaking educations, the two see eye to eye on stylistic decisions and technical details. Ultimately, their promise to each other is to never bottle a wine that they wouldn't drink themselves.
In 2017, Brian and Natalie planted four acres of vineyard to Syrah and Petite Sirah. These Rhône varietals grow well on the west side of Paso Robles, but the selections of vines are very unique. The cuttings came from the Library vineyard in St Helena, farmed by Turley Wine Cellars. Since these vines contain some of the oldest clonal material in California, they are arguably the most adapted to our terroir. In 2019, they planted an additional six acres of vineyard to multiple clonal selections sourced directly from UC Davis. Some of these cuttings were selections that, like SōNA's initial planting, have existed in California for generations but were not available through commercial nurseries.