Jm Fonseca. Twin Vines was conceived to commemorate the 8th generation of the Soares Franco family, the twin daughters of Antonio Franco, owner of Jose Maria da Fonseca winery. This historic winery is one of Portugal's wine producers today. Twin Vines is a refreshing white wine from the Vinho Verde region in the northern part of Portugal. Enjoy this versatile, crisp wine well chilled.