Marcia “Mousie” Williams began her long career in the horse world showing hunters, jumpers, stock and trail horses.  Her childhood love of horses grew into a life of dedication and service to the sport.  An excellent rider, she was highly regarded by all.  She was the Pacific Coast “A” Open Jumper Champion in 1961, 1964, 1965 and 1966 with her horse High Hopes and in 1963 with Hi Fi.

Following her career as a rider, she served the sport she loved as a trainer, administrator, judge and licensed official.  In addition, she assisted in coaching many national and international riders.  She always conducted herself as a professional and helped others to do the same.

Always willing to give of her time and talents, she impacted virtually everyone who followed her in the sport on the west coast.  A director of the Pacific Coast Horse Shows Association (PCHA), Williams was also on the AHSA (USEF) Zone 10 Committee and vice president of the Show Jumping Hall of Fame.

Williams served as Steward and Schooling Supervisor at the 1984 Olympic Games, 1992 and 2000 World Cup Finals and the 1995 Dressage World Cup Finals (Show Jumping Division).  The AHSA Martini & Rossi Horsewoman of the Year in 1966, she was designated as a “Living Legend” some 30 years later at the National Horse Show at Madison Square Garden.  In 1978 she received the Horsewoman of the Year Award from the California Professional Horseman’s Association (CPHA).  In 1999 she won the Mark Mullen Sportsmanship Award, and in 2007, she was honored by the United States Equestrian Federation (USEF) as a recipient of the Federation’s Pegasus Medal of Honor.

Williams was also honored with induction into the National Show Hunter Hall of Fame in 2004 and the CPHA Hall of Fame, and was a recipient of its Lifetime Achievement Award in 2006.