Jules, the sire of Kentucky Derby third place finisher Peace Rules, died Wednesday morning at Haras Santa Maria de Araras in Brazil after suffering from laminitis and colic, according to Dr. Eduardo Vega, a veterinarian who had attended to him.

"He had had laminitis for three months and was lying (down) and had a really bad colic," said Vega. "It's really a shame."

Peace Rules was one of two Grade I stakes winners and 10 overall stakes winners sired by Jules. Five were in North America, and five in Brazil, including Must Be Flying (Braz), his only South American Group I winner. Peace Rules is a member of the second crop of the nine-year-old stallion, who was once himself considered classic material.

He broke his maiden by 14 lengths at Belmont, was beaten a nose in the GII Cowdin S. in second start, he then captured the GIII Nashua S. at a mile. He ended his juvenile campaign with a third in the nine-furlong GII Remsen S. At three, he won an allowance race and the Long Branch S. at Monmouth before he was retired due to injury following a third in the six-furlong Housebuster S. Retired to Bridlewood Farm in Ocala, Florida, Jules was later sold to Brazilian interests.