In the early 1920s Ignacy Jan Paderewski, a noted pianist, composer and prime minister of Poland, planted Petite Sirah and Zinfandel on his Rancho San Ignacio vineyard in the Adelaida area.[4] In 1964, Dr. Stanley Hoffman purchased a 1,200-acre ranch in the Adelaida District and, with the assistance of influential winemaker André Tchelistcheff, planted vineyards creating the Hoffman Mountain Ranch Winery, the first modern commercial winery in Paso Robles, California.[5]