Ana Keller was born in Mexico City. An avid plant lover, she studied biochemistry as an undergraduate. Later, while pursuing her master's degree in London, she took her first formal wine classes. On a fateful evening, her father called and asked if she would be interested in solving a stuck fermentation. She seized the opportunity and found in wine everything she loved: plants, chemistry, art, and the chance to share stories. This is how she joined the Keller Estate endeavor.

Today, at the helm, she continues to guide the estate while taking time to enjoy her family and her newfound passion for ceramics. "

Theresa Heredia earned a bachelor’s degree in biochemistry from California Polytechnic State University in San Luis Obispo. She went on for three years of study in the chemistry and viticulture/enology Ph.D. program at the University of California, Davis. In 2008, Theresa Heredia became head winemaker at Freestone Vineyards, where her Pinot Noirs and Chardonnays earned critical acclaim. Heredia joined Gary Farrell Winery in 2012 as winemaker and was promoted to director of winemaking in 2021, overseeing more than 40 vineyards from Sonoma to Santa Barbara.

She was twice nominated as Winemaker of the Year by Wine Enthusiast, and she has received numerous other accolades for her winemaking, including "Top 50 Sonoma Producer" from Wine Spectator, 2020 and 2019 "Top 100 Winery" from Wine & Spirits, the #1 wine in the Wine Enthusiast "Top 100 Wines of 2017."

A Bay Area native, Angie Hallinan discovered her passion for people and wine shortly after graduating from Sonoma State University with a degree in Psychology. She began her career in Healdsburg at Wilson Winery and LIOCO Wine Co., gaining a broad perspective on the industry by working across multiple departments.

With a Master’s in Business Administration, Angie developed a strong interest in sustainable business practices and long-term strategy for the future of wine. After much persistence from Keller Estate’s team, she officially joined the winery, where she now oversees operations including financial management, personnel, sales, and—naturally—wine.

Beyond the estate, Angie embraces life through live music, outdoor adventures, and exploring new cities whenever she can.