 A bright chestnut standing 15 hands 3 inches he was named after the Ancient Greek hero Diomedes.By the unraced Florizel out of the unraced Pastorella's Dam, aka Sister to Juno (both going back to the Godolphin Arabian, and Sister to Juno going back as well to the Darley Arabian), Diomed was bred by the Hon.Richard Vernon and owned by Sir Charles Bunbury, then trained by him at Hilton Hall.