It's 1978. Dan and Margaret Duckhorn have just started a winery, and the man they've hired is a former pharmacist and Navy veteran named Tom Rinaldi. He doesn't look the part. He turns out to be exactly right. Tom paired a scientist's discipline with real instinct in the cellar. With the Duckhorns, he made the 1978 Three Palms Merlot, an early bet on a grape most of Napa wasn't taking seriously. That mix of science and instinct still defines how we make wine today.
Duckhorn Tenure: Served as founding winemaker for 22 vintages (1978–2000), laying the stylistic foundation for Duckhorn Vineyards.
Inaugural Harvest (1978): Produced Duckhorn’s legendary first commercial vintage—crafting 800 cases of Cabernet Sauvignon and 800 cases of Napa Valley Merlot, including the benchmark 1978 Three Palms Vineyard Merlot.
Background & Training: U.S. Navy veteran and former pharmacy technician who entered the historic UC Davis Viticulture and Enology program (studying alongside contemporaries Tim Mondavi and Mike Martini), followed by early cellar work at Freemark Abbey.
The "Winemaker on a Motorcycle": Known in Napa lore for riding up to winery tastings and early harvest scouting on his motorcycle, bringing an adventurous, hands-on instinct paired with strict UC Davis enological science to the cellar.
Champion of Single-Varietal Merlot: While conventional 1970s Napa wisdom held that Merlot was strictly a blending grape to soften Cabernet Sauvignon, Rinaldi partnered with Dan and Margaret Duckhorn to bottle it as a standalone, age-worthy luxury flagship.
Napa Valley Legacy Beyond Duckhorn: Helped establish other premier Napa Valley estates, serving as founding winemaker for Provenance Vineyards and Hewitt Vineyard in Rutherford, and consulting for boutique producers including Pellet Estate and Patent Wines across a 50-year career.
