Theseus in Madness Picture

As one the most famous hero of Greek mythology, be his descendants described as a Thesiden. He probably got the name "Thesauros" after his birth which is approximately called as much as "storage place".
Theseus was also regarded as a son of the Poseidon and so his name could point to his divine descent. He was trained by his grandfather of Pittheus, his guardian and teacher became Konnidas. Whoever his true father was was kept secret by Aithra and Pittheus.

Why could this hero have become a slave to mythology, not any insanity?
Theseus and the Minataur
Greek Heroes and Monsters
Theseus in Madness
Poster - Minotaur
Theseus and Ariadne