Prix Jean Prat
Rousillon was a dark bay or brown horse with no white markings bred in Kentucky by W. L. Jones and William Stamps Farish III. He was sired by Riverman an American-bred, French-trained who won the Poule d'Essai des Poulains and the Prix Jean Prat in 1972. Riverman went on to become a highly successful stallion, whose offspring included Triptych, Irish River, Gold River and Bahri. Rousillon's dam Belle Dorine never won a race but was a half-sister to several winners..