Aeson in Greek and Roman Biography and Mythology
（Αἴσων), a son of Cretheus, the founder of Iolcus, and of
Tyro, the daughter of Salmoneus. He was excluded by his
step-brother Pelias from his share in the kingdom of
Thessaly. He was father of Jason and Promachus, but the name
of his wife is differently stated, as Polymele, Alcimede,
Amphinome, Polypheme, Polymele, Arne, and Scarphe. (Apollod.
1.9.11 and § 16 ; Hom. Od. 11.258; Tzetz. ad Lycophr. 872;
Diod. 4.50; Schol. ad Apollod. 1.45; Schol. ad Hom. Od.
12.70.) Pelias endeavoured to secure the throne to himself
by sending Jason away with the Argonauts, but when one day
he was surprised and frightened by the news of the return of
the Argonauts, he attempted to get rid of Aeson by force,
but the latter put an end to his own life. (Ap)ollod.
1.9.27.) According to an account in Diodorus (4.50), Pelias
compelled Aeson to kill himself by drinking ox's blood, for
he had received intelligence that Jason and his companions
had perished in their expedition. According to Ovid (Ov.
Met. 7.163, 250, &c.), Aeson survived the return of the
Argonauts, and was made young again by Medeia. Jason as the
son of Aeson is called Aesonides. (Orph. Arg. 55.) - A
Dictionary of Greek and Roman biography and mythology,
William Smith, Ed.
Aeson in Wikipedia
In Greek mythology, Aeson or Aison (Greek: Αἴσων) was the
son of Tyro and Cretheus, who also had his brothers Pheres
and Amythaon. Aeson was the father of Jason and Promachus
with Polymede, the daughter of Autolycus. Other sources
say the mother of his children was Alcimede or
Amphinome. Aeson's mother Tyro had two other sons, Neleus
and Pelias, with the god of the sea Poseidon.
Pelias was power-hungry and he wished to gain dominion over
all of Thessaly. To this end, he banished Neleus and Pheres
and locked Aeson in the dungeons in Iolcus. Aeson sent Jason
to Chiron to be educated while Pelias, afraid that he would
be overthrown, was warned by an oracle to beware a man
wearing one sandal.
Many years later, Pelias was holding the Olympics in honor
of Poseidon when Jason, rushing to Iolcus, lost one of his
sandals in a river while helping Hera (Juno), in the form of
an old woman cross. When Jason entered Iolcus, he was
announced as a man wearing one sandal. Paranoid, Pelias
asked him what he (Jason) would do if confronted with the
man who would be his downfall. Jason responded that he would
send that man after the Golden Fleece. Pelias took that
advice and sent Jason to retrieve the Golden Fleece.
During Jason's absence, Pelias intended to kill Aeson.
However, Aeson committed suicide by drinking bull's blood.
His wife killed herself as well, and Pelias murdered their
infant son Promachus.
Alternatively, he survived until Jason and his new wife,
Medea, came back to Iolcus. She slit Aeson's throat, then
put his corpse in a pot and Aeson came to life as a young
man. She then told Pelias' daughters she would do the same
for their father. They slit his throat and Medea refused to
raise him, so Pelias stayed dead. - Wikipedia