Tolosa was founded in 1998 by Robin Baggett, Bob Schiebelhut and Jim Efird. The business partners began buying Edna Valley ranches and planting them with vineyards. Baggett was a native of the area who dreamed of running a cattle ranch as his grandfather had done, but by the late 1980s viticulture interested him more. Baggett in 2006 started the Alpha Omega wine venture in Napa Valley with the idea of making world class Bordeaux style wines. The success of Alpha Omega prompted him to focus on French style wines in Tolosa too, and in 2015 Baggett hired French native Frederic Elivert to craft Pinot Noir and Chardonnay on Tolosa’s Edna Valley estate. Consulting winemaker is Jean Hoefliger. Under its 1772 Series label Tolosa also produces small amounts of Rhone blends, Grenache and Sauvignon Blanc.