After receiving her degree in Oenology and Viticulture from the Geisenheim University in Germany, Martha spent 10 years honing her craft in Germany, Australia, and the U.S. before joining Merryvale Vineyards in Napa Valley as Assistant Winemaker in 1995. While at Merryvale, Martha began working with Harlan Estate, which recruited her in 1997.
In 2001, she joined SLOAN Estate as Winemaker, where she oversees production and vineyard management utilizing small lot fermentation, rigorous sorting, and a meticulous approach to world-class viticulture. Martha also consulted for Blankiet Estate, raising vineyard and winery quality.
In 2006, Martha joined Checkerboard Vineyards for their inaugural vintage, and continues to make their wines today. Martha and her husband, Bob Levy, also have their own label, LEVY & McCLELLAN, produced from grapes grown at their family vineyard on the hillsides of the Mayacama Mountain range.
Martha joined Vineyard 7 & 8 in 2014, and lives with Bob and their three children in St. Helena.