Given that the quality of a wine can only be as high as that of its raw materials, the selection of a vineyard manager is one of the most critical decisions a winery owner can make. The vineyard manager is the person who is arguably most directly responsible for translating terroir, and for transforming the potential of a vineyard site into something tangible. Kelly and Mary Maher, two of Napa’s top vineyard managers who also happen to be married, came up in the industry together, but ultimately took different career paths.