The Story of El Sultan, a Carthusian Stallion - Circle Z Ranch



el sultan

Since our inception in 1926 we have been known for our fine breeds of horses. Circle Z Ranch’s first and most notable stallion was a Carthusian Stallion named El Sultan, and this is his story.

Heavy in foal, a Spanish mare from the Spanish royal stables of Marquis de Domecq of Jerez de la Frontera was gifted to a stable in Havana, Cuba. Arriving in Cuba in 1931, she soon foaled El Sultan, who would become the stallion for the Circle Z Ranch by the age of five.

A Carthusian Horse, El Sultan’s bloodlines dated back to the late twelve hundreds. After the Moors left Spain, the Carthusian monks in Andalusia bred this larger Moorish Arabian stallion with a larger type of mare from central Europe. This original stallion was named Esclavo. The mare’s bloodlines went so far back into antiquity that her exact breed was unknown.

After 300 years of breeding and meticulous record keeping, the Carthusian monks considered their breed firmly established. Taking the purity of the bloodlines seriously, it is said they even refused royal orders to mix their stallions with other breeds. When the monks disbanded in the 1800’s, the horses were taken in by Juan Jose Zapata, who diligently continued the purity of the bloodline. Called the Saintly Horse because of its extremely gentle disposition, these pure bloods were jealously guarded by the Government and the Spanish remount system as they were excellent cavalry horses.

The Carthusian horses are known for their proud and lofty actions, a showy and rhythmical walk, and a high stepping trot. Their canters are rocking in nature, with natural balance, agility and fire. Today Carthusian horses are raised around Cordoba, Jerez de la Frontera, and Badajoz, Spain on state-owned farms. Nearly all of the modern pure Carthusian horses are descendants of Esclavo.


In 1934 El Sultan was the first Carthusian to live in the United States, and at the time only the sixth to be let out of Spain. Given as a gift from the Cuban Stables to a family in New York, he ultimately ended up in the hands of Mr. R. A. Weaver of Cleveland Ohio. Mr. Weaver was a sponsor of the Kenyon College polo team and a frequent guest at the Circle Z Ranch. Not interested in breeding, he decided that the ideal place for El Sultan would be the Circle Z Ranch, where breeding him with the smaller Mexican range horse would make an ideal guest horse. And he was right.

El Sultan not only sired countless foals for our guest ranch, his gentle disposition led him to serve many functions. Taking well to stock work, he was used for roping at the fall, ranch sponsored rodeos. He also was a frequent show horse at the Tucson parades, winning numerous awards for first of show. Standing over 16 hands, he was said to have been able to jump 6 foot high fences. He was also used during the polo matches at the ranch, which Mr. Weaver helped to establish. He was so gentle that guests rode him as well.


El Sultan was much beloved by the ZInsmeister family, so much so that he had his own stable and corral, and was insured for $10,000. When the Zinsmeisters sold the ranch in 1948, El Sultan stayed with the Zinsmeister family, and was exercised every day until his death on January 2, 1953. In the words of Helen Zinsmeister, “He was more than anyone could expect, and a natural performer and jumper.” His stunning profile still adorns our ranch walls, where El Sultan will forever be remembered as the Circle Z Stallion.