On the same windswept hilltop where Ramona Nicholson once climbed trees and rode bicycles as a child is now Sonoma's newest winery and tasting room. Nicholson, a Sonoma native, recently completed construction on the 15,000-case Nicholson Ranch Winery, a California/Mediterranean-style wine villa atop one of the rolling hills at the Sonoma/Napa border. As the new winery opened, Nicholson and her husband, Deepak Gulrajani, steadied themselves for the competitive landscape of wine and wineries.The T...