Byron Vineyard and Winery was founded in 1984 by winemaker Ken Brown. With years of experience as a winemaker in Santa Barbara County, Ken recognized the region's potential for great wines in the Burgundian style, and was the first winemaker to introduce Rhone-style grape varieties to the area. The first crush at Byron Vineyard & Winery produced 7,600 cases, and Byron soon gained national recognition for high quality Pinot Noir and Chardonnay.

In 1990, the Robert Mondavi family purchased Byron, and Ken Brown became Winemaker and General Manager. He and Tim Mondavi, Robert's son, set about designing the new Byron Winery as an expression of their shared belief in natural farming, experimental viticulture and gentle grape handling.