Thettalus was another one of Herakles' children and like most was illegitimate. Thettalus's mother was Khalkiope daughter of Eurypylus.
Parents[]
Herakles & Khalkiope
Spouse & Lovers[]
Children[]
Antiphus
Phidippus
Nesson
Ancient Text[]
by Khalkiope, daughter of Eurypylus, he had Thettalus
Apollodorus - [2.7.8]