Who were Telphus' grandparents on his father's side?
Telephus: In Greek mythology, Telephus ( ; Greek: Τήλεφος , "Tēlephos", "far-shining") was the son of Heracles and Auge, daughter of king Aleus of Tegea; and the father of Eurypylus. Heracles: Heracles ( ; Ancient Greek: Ἡρακλῆς , "Hēraklēs", from "Hēra", "Hera"), born Alcaeus (Ἀλκαῖος , "Alkaios") or Alcides (Ἀλκείδης , "Alkeidēs"), was a divine hero in Greek mythology, the son of Zeus and Alcmene, foster son of Amphitryon and great-grandson and half-brother (as they are both sired by the god Zeus) of Perseus.
Zeus and Alcmene