One of Sonoma County's largest and most beleaguered wine companies has repositioned itself and is ready for growth, according to its new chief executive officer."I want Ascentia to be Sonoma County's favorite son and shining star," said Mike Kenton, who was hired in January to turn around the 3-year old company. Back in 2008, Ascentia Wine Estates appeared to be the newest powerhouse in the wine industry after a team of veteran wine executives formed the company in a complex financial deal. Ascentia pulled together a portfolio of high-profile brands, including Gary Farrell Winery, Buena Vista Carneros Winery and Geyser Peak Winery.