kills him on the altar. Lycophron's scholiast also says that Apollo started to plan Achilles' death after the murder. This begins to build up the elements of the version of Troilus' story given above: he is young, much loved and beautiful; he has divine ancestry, is beheaded by his rejected Greek lover and, we know from Homer, had something to do with horses. The reference to Troilus as a "lion whelp" hints at his having the potential to be a great hero, but there is no explicit reference to a prophecy linking the possibility of Troilus reaching adulthood and Troy then surviving. Other written sources No other extended passage about Troilus exists from before the Augustan Age by which time other versions of the character's story have emerged. The remaining sources compatible with the standard myth are considered below by theme. Parentage The Apollodorus responsible for the Library lists Troilus last of Priam and Hecuba's sons – a detail adopted in the later tradition – but then adds that it is said that the boy was fathered by Apollo. On the other hand, Hyginus includes Troilus in the middle of a list of Priam's sons without further comment. In the early Christian writings the Clementine Homilies, it is suggested that Apollo was Troilus' lover rather than his father. Youthfulness Horace emphasises Troilus' youth by calling him inpubes ("unhairy", i.e. pre-pubescent or, figuratively, not old enough to bear arms). Dio Chrysostom derides Achilles in his Trojan discourse, complaining that all that the supposed hero achieved before Homer was the capture of Troilus who was still a boy. Prophecies The First Vatican Mythographer reports a prophecy that Troy will not fall if Troilus reaches the age of twenty and gives that as a reason for Achilles' ambush. In Plautus, Troilus' death is given as one of three conditions that must be met before Troy would fall. Beauty Ibycus, in seeking to praise his patron, compares him to Troilus, the most beautiful of the Greeks and the Trojans. Dio Chrysostom refers to Troilus as one of many examples of different kinds of beauty. Statius compares a beautiful dead slave missed by his master to Troilus. Object of pederastic love Servius, in his scholia to the passage from Virgil discussed below, says that Achilles lures Troilus to him with a gift of doves. Troilus then dies in the Greek's embrace. Robert Graves interprets this