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[Greek heroic] One of the Epigonoi. The son of Aeson. While his brother Jason was searching for the Golden Fleece, Promachus and his father were killed by Pelias. The name Pallas Athena, as patron goddess of Athens, was worshipped by (promachos, who leads in battle. 

N M
champion

promachus, promachi
n. m. champion; 

See more at Wikipedia.org...

[Greek heroic] One of the Epigonoi. The son of Aeson. While his brother Jason was searching for the Golden Fleece, Promachus and his father were killed by Pelias. The name Pallas Athena, as patron goddess of Athens, was worshipped by (promachos, who leads in battle. 

N M
champion

promachus, promachi
n. m. champion;