Winemaker. Mother. Visionary. Estate reserve. In 1946, family matriarch Maddalena Riboli began her lifelong journey with San Antonio Winery. She founded one of the first tasting rooms in the state and a highly successful restaurant. Today, the third and fourth generations of the Riboli family honor her passion and dedication with each bottle of her namesake wine. Merlot thrives in the warm days and cool nights of Paso Robles.