Page 26 - May 2021

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DM SISSY HAYDAY
CROSSOVER EFFECT by Larry Thornton
“Sister” and the
Itseems that when man found the horse, he not only found an animal he could
ride for transportation and use to pull a plow or wagon, but also an animal he could compete on to see whose horse was the fast- est. Thus, horse racing in a variety of forms was born. It became a part of our world and a major sport for all time.
Speed has been the key ingredient in
the development of the American Quarter Horse from the beginning. It also tells us
why the performance horse we see today is founded on speed to do their job, as many
of our foundation horses were racehorses or race bred. So, it starts with racing speed and that speed transforms itself into an influence on the performance event. We see that very clearly in barrel racing with the success of DM Sissy Hayday. This great mare is now the All-Time Leading Barrel Horse with earnings of over $2 million, and she’s earning more each time she runs. A review of her pedigree will show the influence of speed from the top to the bottom in this crossover issue.
DM Sissy Hayday, better known as
Sister, was foaled in 2011 and bred by Dillon Mundorf of Three Rivers, Texas. She was officially purchased by Dan and Leslie Kinsel in 2013, and that purchase became a partnership between Leslie and their daughter Hailey Kinsel. Hailey later become the owner of Sister.
Sister’s dam is Royal Sissy Irish, a race mare with four starts, one second and $759 in earnings. She was raced by her breeder
Otto Goebel of George West, Texas. She has had a number of owners, including Dillon Mundorf, and is currently owned by John Mauback of Purcell, Oklahoma.
A recent interview with Dillon Mundorf will fill us in on the early history of Sister’s family. I asked him how he came into the horse business. “I started out about 18 or 19 years ago wanting to raise calf roping and bull dogging type horses, and then I realized that barrel horses were more marketable,” Mundorf said. “So, I tried to raiseahorsethatIlikedandfitme-Ihavea ranching operation running yearlings - and the horses that I could use and yet be marketable in the barrel industry.”
He continued about his family history, “My great grandfather and grandfather had always raised horses and my great grandfather had the first registered horses in North Dakota. He was a Vice President of the National Quarter Horse Breeders Association and then they merged with the AQHA. So, my family has always raised horses and that is how I got into the barrel horse industry.”
Mundorf told how he got Royal Sissy Irish, the dam of DM Sissy Hayday, “My grandfather Otto Goebel owned and bred her. She lost an eye in an accident at the track, and so I traded a mare I had for her.”
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SPEEDHORSE May 2021
DM Sissy Hayday ridden by Hailey Kinsel
© Kristie Marie Photography