Where to Find Us:

Trinity Creek Farm
13228 Greencastle Pike
Hagerstown, Maryland 21740

Phone: +1 (301) 714-0661 Stable

                    (254) 424-1369 Cell

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Trinity Creek Farm
Trinity Creek Farm

About Us

Mark and Sherri have a collective 70+ years of experience with all aspects of horse ownership. We strive for Trinity Creek Farm to be a safe, fun and drama free environment for you and your horses. We are pleased to have Joanna Coleman as our working student.  Come join our team!


Please meet our team below. We look forward to working with you!



Team TRinity creek

Mark on Rondure


Mark Patterson - Owner, Trainer and Instructor

Phone: (301) 714-0661 Stable +1 (254) 424-1369 Cell

Email: mark@trinitycreekfarm.com


Mark Patterson has had a passion for horses from a very young age and has had great success in training and showing in hunter, dressage and eventing disciplines. As a teenager, Mark won the New York State title for Champion Green Hunter.


Mark has competed with the North Texas Eventing Association at the Beginner Novice, Novice and Training levels. He has also shown training and first level at Texas dressage schooling shows and has trained horses through 2nd level. Mark enjoys teaching classical dressage principals and building the foundation of a solid seat. He also enjoys working with client horses to develop self-carriage and prepare for the show ring.

Joanna Coleman - Former Working Student

Email: Joanna@trinitycreekfarm.com


Joanna started riding with us when she was 10 years old. She has natural balance and athletic ability. She also has the ability to calm any horse she is riding. They just relax and get soft with her in the irons. Joanna rode with the Heart of Texas Pony Club and the Shanandoah Valley Pony Club in Hagerstown.  She placed ninth in the nation in the nation in Training level at the Pony Club Championships in 2016. Joanna is currently serving our country in the Air Force.

Sherri on AW Bit of Fabulous aka Dove

Sherri Patterson - Co-Owner of Trinity Creek Farm

Phone - (254) 424-4405

Email: sherri@trinitycreekfarm.com


Sherri Patterson shares the same passion with a different flare, Sherri has spent most of her time in a western saddle team roping, barrel racing and training young horses. She has a passion for dressage and has shown a couple of horses through training level at the local schooling shows. She is currently riding AW Bit of Fabulous in preparation for dressage, eventing and barrel racing competition. She also has a two year old quarter horse gelding by the stallion Frechman's Fabulous who she will be starting under saddle this fall.

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