Award-winning Sovereign Cellars to Host Tastings on Sep 20 and 27 Posted on September 11, 2014April 23, 2015 by GriffinNeighbors Sovereign Cellars is located at 7408 Manzanita, just off Steamboat Island Rd. NW. Click here for a map. For more information about Sovereign Cellars and their Double-Gold award-winning wines, click here to see our prior post on this blog. Tweet Posted in Local Business.