Dioscuros (one of the two, who’s who not indicated), from Perge, 2n century AD. From Wikipedia: In Greek and Roman mythology, Castor[1] and Pollux or Polydeuces were twin brothers, together known as the Dioscuri. Their mother was Leda, but Castor was the mortal son of Tyndareus, the king of Sparta, and Pollux the divine son of Zeus, who seduced or raped Leda in the guise of a swan (Greek myths concerning divine sex are often vague on the issue of female consent). Though accounts of their birth are varied, they are sometimes said to have been born from an egg, along with their twin sisters Helen of Troy and Clytemnestra.