Lonhro, nicknamed The Black Flash, was an Australian champion racehorse. He was from the first crop of the champion Octagonal out of the Group One-placed Shadea, who also produced the Group One winner

The Caulfield Guineas is a Melbourne Racing Club Group 1 Thoroughbred horse race held over 1600 metres at set weights for three-year-old horses at Caulfield Racecourse, Melbourne, Australia.