Viosinho (Vee-oh-SEEN-ho) - A Portuguese grape used most often in white port.

Viura (vee-YOO-rah) - Grown predominately in the Rioja region of Spain to produce low acidity wines for immediate consumption.  Also grown in Barcelona for the production of Cava, a sparkling wine. And grown in the Languedob-Roussillon region of France. 

Xarel-lo (shah-REHL-loh) - From Catalonia in northeastern Spain. Widely planted but best known for its use in the production of Cava.