ABOUT US

Brewster Ranch LLC | Ten Sleep, Wyoming | Est. 1957

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Brewster Ranch started in 1957 when Byron Brewster and his son Logan moved their cattle west from Lusk, Wyoming. After surviving the brutal blizzards of ’49, Byron knew the country near Ten Sleep would winter cattle better. He’d trapped that land years before and figured it was the place to start over. They came with a small herd of registered Herefords who were branded with Charles Brewster's (Byron's father) Bar X Bar brand and Byron's Diamond J brand. They also brought the surviving ewes that Kathy (Logan's wife) had left. Byron, Logan and their wives built a life in the shadows of the Big Horns.

 

​​​​​​Through the 1970s and ’80s, Logan and his son Tom grew the operation. They introduced Angus bulls to their Hereford cows, producing the Black Baldy cattle that became the foundation of the herd: maternal, feed-efficient, and tough enough to handle the terrain. They became the backbone of the operation. That cross still runs strong through our pastures today.

Tom raised his family here on the ranch - including his son Mark. Mark grew up alongside those cattle, working horseback with his dad and granddad from the time he could ride. He left long enough to study ag in Powell, but the plan was always to come home. He did just that, and stepped into the operation full-time, helping keep things moving as Logan aged and passed, and as the country shifted beneath their boots.

When Mark was in high school, his grandfather asked if he wanted to register his own brand. Mark didn’t hesitate, he wanted his great-great-grandfather’s Bar X Bar brand. That brand had passed down through one of Charles Brewster’s daughters and was held by a family cousin. Mark wrote to her, asking if she’d transfer the brand to him to keep it in the family and on cattle. She agreed, and Mark started branding his own personal herd with the Bar X Bar in 2002.
 

Mark met Kate in 2018. At the time, Kate was working for a purebred Red Angus outfit in Gillette, Wyoming. Before that, she’d worked on horse and cattle ranches, day-worked, and spent time at sale barns all across the western U.S. Mark was drawn to her from the start, not just because she loved the cowboy way of life, but because it was all she’d ever wanted to do.

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That October, Kate took time off from her ranch job to help them trail cows off the mountain. Then, during calving season in 2019, she stuck by Mark’s side, helping him through long nights and early mornings, and somehow didn’t murder him for being sleepless and grumpy. That’s when he knew she was the one.

In 2024, after decades of working side-by-side with his family, Mark and Kate took over full ownership of the ranch, purchasing the remaining shares and stepping into the next chapter of Brewster Ranch. They transferred the Bar X Bar brand into the Brewster Ranch LLC, using it now on their replacement heifers. To keep sorting simple, Kate’s one-iron brand marks the steers. Together, they carry forward a legacy built on hard work, respect for the land, and a commitment to raising cattle and horses that fit the country.