Adolph Mogavero, a respected horseman, official and member of the Show Jumping Hall of Fame, died Aug. 25 in Sarasota, Fla. He was 89.

Mr. Mogavero was born just outside of Boston, Mass. He lived down the road from a horse farm and would regularly stop on the way home, sit on the fence and watch the riders. When he was 9 years old, the trainer asked him if he would like to begin riding, an offer he promptly accepted.

Jayne Fleming, a lifelong horsewoman, died on Aug. 31. She was 80.

Mrs. Fleming’s passion for horses began at a young age; she was 6 when she fell in love with the Welsh ponies she saw at the Royal Winter Fair in Toronto, Ont. Shortly thereafter, her mother gave her a choice of one of three sports: riding, golf or tennis. It was an easy decision for her to choose horses. She began riding with Horace Cunningham at a stable in Ottawa, Ont., breaking horses shipped in from the West.

Gigolo FRH, a six-time Olympic medalist and arguably the most successful dressage horse in history, was euthanized Sept. 23 after he suffered complications from an injury. He was 26.

Gigolo was bred by Horst Kulssmann in 1983. In 1989, Isabell Werth’s then-trainer and sponsor, Uwe Schulten-Baumer, purchased the horse for Werth to ride.

Fuerst Gotthard, a respected sport horse stallion and winner of multiple grand prix jumping competitions, died of age-related issues on Sept. 24. He was 26.

The gray Oldenburg was bred at Gestut Vorwerk, Germany, and imported into the United States as a 3-year-old.

At his Oldenburg licensing, Fuerst Gotthard (First Gotthard—Elisa, Inschallah) scored multiple 8s and was reserve champion of his 100-day test in Culpeper, Va., where he received 9s for ability to work, general jumping ability and cross-country, and an overall score of 132.24 points.

Lois Duffey a lifelong horsewoman whose Mr. Frisk won the Seagram Grand National Steeplechase in England in 1990, died in Chestertown, Md. She was 96.

Mrs. Duffey, was involved with horses from an early age, hunting in Virginia and in New York and attending steeplechases. She married steeplechase jockey and farmer Harry Duffey in 1935.