Marilyn grew up on a ranch in Southern California and began working cattle on foot long before she saved enough money to buy a horse. Her parents made the mistake of telling her if she saved her money, and if a trainer moved to their town of Valley Center, that she could have a show horse. She began showing horses as a youth in 1974 and won or placed in the Stock Horse and Stock Seat Equitation classes at prestigious places like Del Mar and Santa Barbara. Instead of going into the newly formed AQHA Amateur classes she began showing professionally. Like many horsemen, she showed in many different classes including halter, western pleasure and hunter under saddle in addition to reining.
She has won multiple halter and pleasure futurities and PCQHA Year End Awards and sold NRCHA Futurity Champions, Congress Champions, AQHA World Show Champions and Reserve Champions. Some of the horses she has bred, owned, trained and/or shown include: King Fritz Two, Highly Treasured (Superior Halter), American Dandy (AQHA World Champion Aged Stallion), Another Dandy (AQHA Reserve World Champion Three Year Old Stallion), Lucy Chexx (NRCHA Hackamore Champion and dam of Honor Roll Reining Horse, Herbie Chexx), Request The Tab (Del Mar Hackamore Stake Champion), Cheryl Chex (Del Mar Stock Horse Stake Champion and dam of Honor Roll Reining Horse, CC Whoa Is Me), Chino Chexx (AQHA Amateur Working Cow Horse Reserve Champion) Milliondollarchexx (over 450 AQHA points), Im Already Blue (over 450 AQHA points), Prize Possession (Superior Western Pleasure), Plenty Popular (AQHA Champion, Reserve Champion Honor Roll Pleasure Stallion), Hi Yeller Lena (Northwest Ranch Festival Reserve Champion) and Good Old Times (NRCHA Int Open Champion).
In 2000 she coached the winners of both the Novice Amateur and Amateur PCQHA High Point saddles and then took a break from training outside horses when she was injured in 2001. She and Pete were married in 2002 and they purchased Yellow Roan Of Texas in 2003. Because the breeding business left little time for showing, she decided to show in the Non Pro classes. After the required 5 year break to obtain Non Pro status, she won the NCRCHA Non Pro Class at McArthur and the NRCHA Non Pro Bridle Class at the Cow Palace Grand National. She also won the Junior Reining and the Senior Reining at the Cow Palace Grand National and won the WCRHA Snaffle Bit/Hackamore Class by 8 points with Tulare.
In 2011 she and Pete coached Doctor Dually Pep and Bryna Hull, who marked a 74 the first time she ever showed in Reining. They won the Gold N Grand Rookie II Saddle, the WCRHA Rookie II Reserve Championship, the CRHA Rookie II Reserve Championship, the CRHA Pro/Am Championship and the QHEAC Circuit Championship in Amateur Reining.
She and Pete have developed a very successful reproduction program, getting results from stallions that would not ship or mares that would not get in foal. Marilyn is proficient at embryo transfer and vitrification, semen freezing, international shipments, and specializies in problem mares.
She is a member of the AQHA Professional Horsemen’s Association, the International Embryo Transfer Society, and a former AQHA judge and PCQHA Board Member.