Prix d'Ispahan
Octagonal stood at Cootamundra, New South Wales prior to his death. He is the sire of Australian Group One winning brothers Lonhro and Niello, the South African Group 1 winner, Suntagonal. In 1998, he stood at Haras du Quesnay in France where his most prominent offspring was Laverock whose wins include two Group 1 races: the Prix d'Ispahan at Longchamp Racecourse in Paris and the Gran Premio del Jockey Club at Milan, Italy's, San Siro Racecourse.