Meet Your Ranchers
John and Keri Guldemann
John Guldemann is a lifelong cattleman and conservationist with deep roots in the American Southwest. Alongside his wife, Keri, he has dedicated decades to raising Criollo cattle, descendants of the first cattle to arrive in the Americas in the early 1500s.
A native of El Paso, John met Keri while attending Sul Ross State University in Alpine, Texas. After graduating, he began his career working for Diamond A Cattle Company on the historic Big Bend Ranch in Presidio, Texas. When the ranch was sold to the state of Texas in 1988, John became the first superintendent of Big Bend Ranch State Park, overseeing its transition into a protected natural area. Keri, who had managed lodge facilities under the previous ownership, continued in her role for the state park.
That same year, the Guldemanns purchased half of Diamond A’s Criollo herd and founded Jinglebob LTD, a registered cow-calf operation specializing in heifer bulls. Their ranching journey took them from Marfa, Texas, to Animas, New Mexico, in 1995, where they expanded into the team roping industry, leasing Criollo cattle to support the growing sport while also maintaining their herd for the beef market.
After years of ranching in New Mexico and Texas, John and Keri returned to Anthony, New Mexico, where they now focus on finishing and marketing Criollo cattle directly to consumers. They have successfully developed a local market for their high-quality beef, selling at Las Cruces Farmer’s Market and Arovino’s Desert Crossings Farmer’s Market in Sunland Park, New Mexico.
Through their lifelong commitment to sustainable ranching and heritage livestock, John and Keri Guldemann have played a key role in preserving and promoting Criollo cattle in the American Southwest.
