Katie was born and raised in Oklahoma. She has been riding hunters & jumpers since 2003 and has competed  in both hunter and jumper disciplines. She joined our team January 2017 after graduating from William Woods University where she obtained a Bachelor of Science in Equine Science & Social Work with a minor in Equestrian Administration. 

Katie  is our acdemy director as well as she runs our camps, working student and equestrian team programs. 

​"Great people and great horses! The instructors care about their students and want them to learn and grow with each visit. The new stars program is a wonderful way to motivate and teach the students about horse care and the horses routines, plus the horses are sweet as can be. This is a great facility with truly great people!!!"  

- Carley Nicole


Mari  Jebens

Mari has a Bachelor's degree in Equine Science from Stephens College. She is  also a USDF Silver and Bronze medalist and has successfully competed in dressage through Grand prix Level. Mari’s focus on flatwork and its relation to fences sets up horse and rider for success in and out of the show ring. In addition to her years of riding and coaching, 

She has coached riders from the start of their riding career through the Grand Prix level, as well as helped keep our show horses fit and ready for reaching the potential to compete at all levels. ​Mari is a true horsewoman as well as a dog lover, you will never see her without one of her canine sidekicks at her side!

Contact Great Griffin Farm Today!


We take great pride in the reputation we developed over our 15  years of operation. Please
take a moment to learn about the experiences people just like you enjoyed with us!

“Great Griffin Farm has truly been a blessing to our family! My stepdaughter has been riding and taking lessons for almost 3 years. During this time she has found her passion for horses and has gained so much confidence! The staff at GGF is very dedicated and awesome to work with!! Thank you Great Griffin Farm!!”

- Ashley Deckelman

"Amanda and Ublesse" 

 Kentucky Horse Park

Contact us today (636) 398-4116

Amanda Hudspeth Tyarks

I founded Great Griffin Farm in April of 2002 with My Father Edwin. 

Our goal was to operate a top notch equestrain center in the heart of the mid west where  we could share our passion and our love of horses as well as  offering excellent care, training and coaching for all our athletes: horse and human alike!I believe whether  you are competing at the National level or are a novice who is passionate about the sport you will find there is a place for  both horse and rider to grow and reach their goals at Griffin.

I love working with my students sharing my knowledge and experiences to help them achieve thier goals both in and out of the show ring.

Betsy was born in the horse idustry as her mother was the Master of Foxhounds for Bridlespur Hunt Club and her father was the Captain of St. Louis Polo Club. She graduated  from Roanoke Collage in Salem, Virginia with a BA and BFA. She received a great education while she was in "horse country" riding-showing-training-steeplechasing and hunting with hounds.  Upon her return to St. Louis in 1973 Besty was drawn back to her passion and has an extensive career judging-training-teaching and riding. Her husband is the President of St. Louis Benefit Polo and three sons also  have foxhunted and competed on the national show cicuit sharing in family tradition.  We are blessed to offer  Betsy's 60  plus years of experience to our program.

Katie Jaeger

Learn About Us

At Great Griffin Farm, our mission is to exceed the expectations of every person seeking to join our program!

“My vision for Great Griffin Farm was to create a place for people who enjoy riding and
love horses. I am fortunate to work with great trainers, wonderful clients and top-quality
horses, which makes our place special!”

~ Amanda Hudspeth Tyarks ~

Great Griffin Farm

Enjoy, Learn, Compete