The Aeneid by Virgil Book 5 Page 42

horsemanship, these contests Ascanius first revived when he girt Alba Longa with walls, and taught the early Latins, even as he himself solemnized them in boyhood, and with him the Trojan youth. The Albans taught their children; from them in turn mighty Rome received the heritage and kept it as an ancestral observance; and today the boys are called Troy and the troop Trojan.

Thus far were solemnized the sports in honour of the holy sire.

Here first Fortune changed and broke her faith. While at the tomb with various games they pay the due rites, Juno, daughter of Saturn, sends Iris down from heaven to the Ilian fleet, and breathes fair wins to waft her on, pondering many a thought and with her ancient grudge still unsated. Iris, speeding her way along her thousand-hued rainbow, runs