Our Team

  • Sebastian Juarez
  • TRE Coles
  • MONTE L. Hansen 

Sebastian Juarez

Sebastian Juarez co-founded

Rancho Maria Wines in the Fall of 2011. A second generation wine country kid, Sebastian spent his youth running with his dogs though vineyards and orchards. He realized his love for the valley from a very young age. His father, a vineyard manager, would take young Sebastian to work as he oversaw the establishment of some of Sonoma Counties most prestigious vineyards. As a kid, Sebastian would paddle his kayak up and down the Russian River to satisfy his thirst for adventure while exploring miles of riverside vineyards. As he grew, so did his love wine. His parents would bring him along as they tasted wines from up and coming wineries around Sonoma & Napa County, occasionally allowing him to taste & spit.

As a young adult, Sebastian received both formal and informal wine training from family friends, neighbors, chef’s and somms, vintners and winemakers. Soaking up knowledge from anyone willing to teach and nourish his thirst for wine knowledge. Attending the Santa Rosa Junior College, he learned the fundamentals of wine business, viticulture and enology, while also working for various wineries throughout the Russian River & Dry Creek Valley.  

In the harvest of 2011, after months of careful planning, the family harvested 6 tones of estate fruit intended for Rancho Maria Wines. 350 cases were bottled, and Rancho Maria Wines was born.


Tre Coles was originally born in Southern California and grew up on camp Pendleton as his father was a Marine. He spent the first part of his life in Southern California riding bikes and playing on the beach with the other military kids. After spending ten years on base, the family moved back to their mothers hometown of Glen Ellen. Things were business as usual for young Tre, only now he was riding bikes on the same sidewalks his mom grew up on. The beaches were replaced by vineyards, and Tre was able to roam into the wine world.

Growing up down the street from Valley of the Moon Winery. Tre realized the magnitude of the wine industry from a young age. His mom would take him walking through the vineyards. One of his fondest memories as a kid is harvest time in Sonoma.

Tre took his first wine job at Repris, guiding tours on the world famous Sonoma Mountain AVA. After spending a couple of seasons walking up and down the rolling hills of Sonoma Mountain, Tre decided to change the scenery by moving to Rancho Maria Tasting Lounge on the plaza.

Monte Hansen

Monte Hansen, once a sheriff in Sonoma County, spent his working days driving through the rolling hills and back roads of Petaluma, Dry Creek and Alexander Valley. After spending years patrolling Sonoma County, Monte decided to purchase a little ranch on the slopes of Dry Creek, where he lives with his wife, Stella.

When Monte decided it was time to try his hand at growing grapes, he spent countless hours researching and gathering resources. He recognized that Zinfandel was king of the DCV, and that his lusch hillside was the perfect place to grow world class Zinfandel & Petite Sirah.