Sloan Estate Winery was founded in 1997 when ex-supermarket chain owner, Stuart Sloan, purchased 40 acres of land in the eastern portion of the Rutherford district in the Napa Valley.
Miguel Angel de Gregorio, the proprietor of Finca Allende, grew up in Rioja and was heavily influenced by his father, who was the head viticulturist at the Ygay estate of Marques de Murrieta.