Complex sentence: The post-Prohibition wine industry in Oregon began with Richard Somer planting Hillcrest Vineyard at the south end of the Umpqua Valley in 1961, though some local family owned vineyards (such as Callahan Ridge, now Champagne Cellars) predate prohibition.
Split into simpler sentences: The post-Prohibition wine industry in Oregon began with Richard Somer planting Hillcrest Vineyard at the south end of the Umpqua Valley in 1961. Although some local family owned vineyards like Callahan Ridge (Now Champagne Cellars) predate prohibition.