Known as "The Ancestor" after John Dewar, our founder, this impeccable blend is the result of a time honored process. After we blend the whiskies, we marry the blend in vintage oak casks and let it harmonize to perfection. It's what our family did then. It's what we do now. Known as "The Ancestor" after John Dewar, our founder, this impeccable blend is the result of a time honored process. After we blend the whiskies, we marry the blend in vintage oak casks and let it harmonize to perfection. It's what our family did then. It's what we do now.