The Bucklin's were all born and raised in San Francisco, but spent virtually every weekend and summer on their Grandmother's ranch in Sonoma. In 1976, their mother Anne, a professional landscape gardener, moved to Sonoma when she married Otto Teller. Otto and Anne lived together on Oak Hill Farm where they raised organic flowers and vegetables. In 1981, the Tellers purchased the venerable Old Hill Ranch Vineyard which is adjacent to the farm. Meanwhile, the four Bucklin siblings set off on separate paths across the country pursuing various careers, spouses, and hobgoblins, only to return to the family farm in Sonoma.

Since 1982, Duncan Peak Vineyards has specialized in growing Cabernet Sauvignon and Petite Sirah grapes and producing excellent Cabernet Sauvignon and Petite Sirah wines in this estate grown and produced wine property known as Duncan Ranch, at the base of Duncan Peak on the edge of the Sanel Valley near Hopland, California. The grapes are grown with as many sustainable and organic farming techniques as possible.

Vogelzang Vineyard is planted in the newly acquired appellation of Happy Canyon of Santa Barbara. This unique area has proven to show site specificity for Bordeaux varietals. Because of its location in the most south-eastern corner of the Santa Ynez valley, the morning fog burns off earlier than the rest of the valley, providing the much-desired longer day of heat. The late afternoon "set your clock at 4 PM" marine winds quickly promise to ease the extended heat. In addition to the advantage of these weather patterns, the gravely loam soil is strewn with rock and rubble contributing to the low vigor and proper drainage.