Martikov family own this Winery. It was attacked by fanatical Druids, allied/empowered by Strahd.
The vineyard supplies all the wine in Barovia. The entire place will run out of wine if the Vineyard isn’t functioning.
The reason why the Vinyard can make such good wine is because they had special seeds: Magic Gem Seed
They used to make 3 types of wine. #1 The Rich Champaign du le Stomp #2 Red Dragon Crush #3 Purple Grape Mash #3
Someone stole one of the gems years ago, so they can no longer produce #1, their best wine. Since then, people have stole the other 2 gems, the winery cannot even make any decent wine in Barovia anymore. For the good of all Barovia, Davian Martikov asked us to retrieve the Magic Gem Seed.