Helen of Troy was the sister of the twins Castor and Pollux. Their mother was Leda, and their other sister was Clytemnestra. Pollux was also immortal whereas Castor was mortal.
Castor et Pollux was created in 1737.
Castor and Pollux make up the heads of Gemini, the Twins.
The wives of the Dioscuri were the Leucippides; Phoibe (who married Polydeuces/Pollux)and Hilaeira (who married Castor). Hilaeira had with Castor: Anogon/Anaxis Phoibe had with Pollux: Mnesileos/Mnasinous
In Greek mythology, Castor and Pollux were twins with different fathers, and were brothers of Helen of Troy.
Gemini, the Twins. Castor and Pollux were the twins that give the constellation its name.
Castor and Pollux
Pollux
Castor and Pollux (or Polydeukes in Greek).
Castor is brother of Polydeuces (Pollux)
Leda
Gemini is a constellation which represents twins named Castor and Pollux. Castor was mortal and Pollux was immortal. When Castor died, Pollux asked his father Zeus to let him share his immortality with Castor to become the constellation known as Gemini.--from Wikipedia.org
Pollux and Castor were gods that represented death and life/immortality.