> "white beards": Aeneida, X. 312,324; VIII, 330
Perhaps you have the references wrong. The first and last do not mention
hair or beards at all, while the middle one talks only of a youth "flaventem
prima lanugine" - tawny with the first hairs on his cheeks - what we used to
call bumfluff.
Flaveo is normally "be yellow", but colour words are notorious in Latin and
Greek. It can't be taken to imply that the young man in question was blond,
merely that the bumfluff was not yet dark - a common state.
Peter